feat(infra): initial plugin system

- Added the ability to load and keep track of several plugins at once
- Removed `wasm-wip` feature flag, enabling plugins in all builds
- `split_space` now returns a tuple with the `part_position_and_size` (as before) plus a cloned version of the part, so plugins and terminals can be distinguished by its users
- Added a `Draw` instruction for rendering plugins when asked to by Mosaic
- Added a new `PluginPane`, implementing `Pane` for plugins!
- Replaced RawFd as a pane-identifier with the `PaneId` enum in most places
- `change_size` -> `change_pos_and_size`, with the functionality updated to fit the new name
- `buffer_as_vte_output` -> `render`
- `pid()` on the `Pane` trait now returns a `PaneId`
- Changed lots of functions in `tab.rs` to be more pane oriented, renaming some to remove the `terminal` and switching to `PaneId`s
- splitting functions in `tab.rs` now correctly update the positions of returned fragments
- Used `PaneId`'s as a replacement for `PaneKind` in the tab `BTreeMap`
- Removed `get_rows` and `get_columns` from the `Pane` trait
- Layouts can now create plugin panes!
- Changed lots of the `active_terminal` stuff in `tab.rs` to work with all panes
- Changed the `Tab` `render` function, so that common requirements are moved there and out of the `Pane::render()` methods
- Added a `shared.rs` to `utils` with a couple of useful functions
- We can now accept input and pass it to plugins via serialised JSON
- Trigger a screen render after handling input meant for a plugin
- Allow plugins to be properly closed
- Allow plugin panes to be split (opening a new terminal)
- Allow plugin API functions to send messages on the PTY bus
- Added the API functionality needed for a plugin to open a file in a new pane
- No more compiler warnings!
- Fixed 53 clippy lints!

17 files changed, 20 insertions, 22 deletions

diff --git a/src/tests/fakes.rs b/src/tests/fakes.rs
index 8ae1a972..821183b6 100644
--- a/src/tests/fakes.rs
+++ b/src/tests/fakes.rs
@@ -1,4 +1,4 @@
-use crate::terminal_pane::PositionAndSize;
+use crate::panes::PositionAndSize;
 use std::collections::{HashMap, VecDeque};
 use std::io::Write;
 use std::os::unix::io::RawFd;
@@ -130,7 +130,7 @@ impl OsApi for FakeInputOutput {
             .unwrap()
             .push(IoEvent::SetTerminalSizeUsingFd(pid, cols, rows));
     }
-    fn into_raw_mode(&mut self, pid: RawFd) {
+    fn set_raw_mode(&mut self, pid: RawFd) {
         self.io_events
             .lock()
             .unwrap()
diff --git a/src/tests/fixtures/layouts/panes-with-plugins.yaml b/src/tests/fixtures/layouts/panes-with-plugins.yaml
index 09913bb4..7fb13b2e 100644
--- a/src/tests/fixtures/layouts/panes-with-plugins.yaml
+++ b/src/tests/fixtures/layouts/panes-with-plugins.yaml
@@ -14,4 +14,4 @@ parts:
       Percent: 80
   - direction: Vertical
     split_size:
-      Percent: 20
+      Percent: 20
\ No newline at end of file
diff --git a/src/tests/integration/basic.rs b/src/tests/integration/basic.rs
index 29cabcd5..7c9d3c6a 100644
--- a/src/tests/integration/basic.rs
+++ b/src/tests/integration/basic.rs
@@ -1,4 +1,4 @@
-use crate::terminal_pane::PositionAndSize;
+use crate::panes::PositionAndSize;
 use ::insta::assert_snapshot;
 
 use crate::tests::fakes::FakeInputOutput;
diff --git a/src/tests/integration/close_pane.rs b/src/tests/integration/close_pane.rs
index f57e6a4b..3aed7480 100644
--- a/src/tests/integration/close_pane.rs
+++ b/src/tests/integration/close_pane.rs
@@ -1,4 +1,4 @@
-use crate::terminal_pane::PositionAndSize;
+use crate::panes::PositionAndSize;
 use ::insta::assert_snapshot;
 
 use crate::tests::fakes::FakeInputOutput;
diff --git a/src/tests/integration/compatibility.rs b/src/tests/integration/compatibility.rs
index a82b9d30..8b446cb4 100644
--- a/src/tests/integration/compatibility.rs
+++ b/src/tests/integration/compatibility.rs
@@ -1,7 +1,7 @@
 use ::insta::assert_snapshot;
 use ::std::collections::HashMap;
 
-use crate::terminal_pane::PositionAndSize;
+use crate::panes::PositionAndSize;
 use crate::tests::fakes::FakeInputOutput;
 use crate::tests::possible_tty_inputs::Bytes;
 use crate::tests::utils::get_output_frame_snapshots;
diff --git a/src/tests/integration/layouts.rs b/src/tests/integration/layouts.rs
index fe935d2e..35ff7188 100644
--- a/src/tests/integration/layouts.rs
+++ b/src/tests/integration/layouts.rs
@@ -1,7 +1,7 @@
 use insta::assert_snapshot;
 use std::path::PathBuf;
 
-use crate::terminal_pane::PositionAndSize;
+use crate::panes::PositionAndSize;
 use crate::tests::fakes::FakeInputOutput;
 use crate::tests::utils::commands::{COMMAND_TOGGLE, QUIT};
 use crate::tests::utils::get_output_frame_snapshots;
diff --git a/src/tests/integration/move_focus_down.rs b/src/tests/integration/move_focus_down.rs
index 72ac27ae..771c31fe 100644
--- a/src/tests/integration/move_focus_down.rs
+++ b/src/tests/integration/move_focus_down.rs
@@ -1,6 +1,6 @@
 use ::insta::assert_snapshot;
 
-use crate::terminal_pane::PositionAndSize;
+use crate::panes::PositionAndSize;
 use crate::tests::fakes::FakeInputOutput;
 use crate::tests::utils::get_output_frame_snapshots;
 use crate::{start, CliArgs};
diff --git a/src/tests/integration/move_focus_left.rs b/src/tests/integration/move_focus_left.rs
index 2d1a1480..ca676fb6 100644
--- a/src/tests/integration/move_focus_left.rs
+++ b/src/tests/integration/move_focus_left.rs
@@ -1,6 +1,6 @@
 use ::insta::assert_snapshot;
 
-use crate::terminal_pane::PositionAndSize;
+use crate::panes::PositionAndSize;
 use crate::tests::fakes::FakeInputOutput;
 use crate::tests::utils::get_output_frame_snapshots;
 use crate::{start, CliArgs};
diff --git a/src/tests/integration/move_focus_right.rs b/src/tests/integration/move_focus_right.rs
index 329d2f2b..80e0f2f0 100644
--- a/src/tests/integration/move_focus_right.rs
+++ b/src/tests/integration/move_focus_right.rs
@@ -1,6 +1,6 @@
 use ::insta::assert_snapshot;
 
-use crate::terminal_pane::PositionAndSize;
+use crate::panes::PositionAndSize;
 use crate::tests::fakes::FakeInputOutput;
 use crate::tests::utils::get_output_frame_snapshots;
 use crate::{start, CliArgs};
diff --git a/src/tests/integration/move_focus_up.rs b/src/tests/integration/move_focus_up.rs
index 273b7dae..5abfb42f 100644
--- a/src/tests/integration/move_focus_up.rs
+++ b/src/tests/integration/move_focus_up.rs
@@ -1,6 +1,6 @@
 use ::insta::assert_snapshot;
 
-use crate::terminal_pane::PositionAndSize;
+use crate::panes::PositionAndSize;
 use crate::tests::fakes::FakeInputOutput;
 use crate::tests::utils::get_output_frame_snapshots;
 use crate::{start, CliArgs};
diff --git a/src/tests/integration/resize_down.rs b/src/tests/integration/resize_down.rs
index ba56a0c4..3a639910 100644
--- a/src/tests/integration/resize_down.rs
+++ b/src/tests/integration/resize_down.rs
@@ -1,6 +1,6 @@
 use insta::assert_snapshot;
 
-use crate::terminal_pane::PositionAndSize;
+use crate::panes::PositionAndSize;
 use crate::tests::fakes::FakeInputOutput;
 use crate::tests::utils::get_output_frame_snapshots;
 use crate::{start, CliArgs};
diff --git a/src/tests/integration/resize_left.rs b/src/tests/integration/resize_left.rs
index 95b241e3..685d291c 100644
--- a/src/tests/integration/resize_left.rs
+++ b/src/tests/integration/resize_left.rs
@@ -1,6 +1,6 @@
 use ::insta::assert_snapshot;
 
-use crate::terminal_pane::PositionAndSize;
+use crate::panes::PositionAndSize;
 use crate::tests::fakes::FakeInputOutput;
 use crate::tests::utils::get_output_frame_snapshots;
 use crate::{start, CliArgs};
diff --git a/src/tests/integration/resize_right.rs b/src/tests/integration/resize_right.rs
index 768636a3..561b962e 100644
--- a/src/tests/integration/resize_right.rs
+++ b/src/tests/integration/resize_right.rs
@@ -1,6 +1,6 @@
 use ::insta::assert_snapshot;
 
-use crate::terminal_pane::PositionAndSize;
+use crate::panes::PositionAndSize;
 use crate::tests::fakes::FakeInputOutput;
 use crate::tests::utils::get_output_frame_snapshots;
 use crate::{start, CliArgs};
diff --git a/src/tests/integration/resize_up.rs b/src/tests/integration/resize_up.rs
index eb9000df..d94bcd3f 100644
--- a/src/tests/integration/resize_up.rs
+++ b/src/tests/integration/resize_up.rs
@@ -1,6 +1,6 @@
 use ::insta::assert_snapshot;
 
-use crate::terminal_pane::PositionAndSize;
+use crate::panes::PositionAndSize;
 use crate::tests::fakes::FakeInputOutput;
 use crate::tests::utils::get_output_frame_snapshots;
 use crate::{start, CliArgs};
diff --git a/src/tests/integration/tabs.rs b/src/tests/integration/tabs.rs
index edf239a3..c968e232 100644
--- a/src/tests/integration/tabs.rs
+++ b/src/tests/integration/tabs.rs
@@ -2,8 +2,8 @@ use insta::assert_snapshot;
 
 use crate::tests::fakes::FakeInputOutput;
 use crate::tests::utils::get_output_frame_snapshots;
+use crate::{panes::PositionAndSize, tests::utils::commands::CLOSE_FOCUSED_PANE};
 use crate::{start, CliArgs};
-use crate::{terminal_pane::PositionAndSize, tests::utils::commands::CLOSE_FOCUSED_PANE};
 
 use crate::tests::utils::commands::{
     CLOSE_TAB, COMMAND_TOGGLE, NEW_TAB, QUIT, SPLIT_HORIZONTALLY, SWITCH_NEXT_TAB, SWITCH_PREV_TAB,
diff --git a/src/tests/integration/toggle_fullscreen.rs b/src/tests/integration/toggle_fullscreen.rs
index db555ae3..f715300d 100644
--- a/src/tests/integration/toggle_fullscreen.rs
+++ b/src/tests/integration/toggle_fullscreen.rs
@@ -1,6 +1,6 @@
 use insta::assert_snapshot;
 
-use crate::terminal_pane::PositionAndSize;
+use crate::panes::PositionAndSize;
 use crate::tests::fakes::FakeInputOutput;
 use crate::tests::utils::get_output_frame_snapshots;
 use crate::{start, CliArgs};
diff --git a/src/tests/utils.rs b/src/tests/utils.rs
index a107dce4..63c953f6 100644
--- a/src/tests/utils.rs
+++ b/src/tests/utils.rs
@@ -1,5 +1,5 @@
-use crate::terminal_pane::PositionAndSize;
-use crate::terminal_pane::TerminalPane;
+use crate::panes::PositionAndSize;
+use crate::panes::TerminalPane;
 
 pub fn get_output_frame_snapshots(
     output_frames: &[Vec<u8>],
@@ -7,9 +7,7 @@ pub fn get_output_frame_snapshots(
 ) -> Vec<String> {
     let mut vte_parser = vte::Parser::new();
     let main_pid = 0;
-    let x = 0;
-    let y = 0;
-    let mut terminal_output = TerminalPane::new(main_pid, *win_size, x, y);
+    let mut terminal_output = TerminalPane::new(main_pid, *win_size);
 
     let mut snapshots = vec![];
     for frame in output_frames.iter() {