feat(plugins): introduce 'pipes', allowing users to pipe data to and control plugins from the command line (#3066)

* prototype - working with message from the cli

* prototype - pipe from the CLI to plugins

* prototype - pipe from the CLI to plugins and back again

* prototype - working with better cli interface

* prototype - working after removing unused stuff

* prototype - working with launching plugin if it is not launched, also fixed event ordering

* refactor: change message to cli-message

* prototype - allow plugins to send messages to each other

* fix: allow cli messages to send plugin parameters (and implement backpressure)

* fix: use input_pipe_id to identify cli pipes instead of their message name

* fix: come cleanups and add skip_cache parameter

* fix: pipe/client-server communication robustness

* fix: leaking messages between plugins while loading

* feat: allow plugins to specify how a new plugin instance is launched when sending messages

* fix: add permissions

* refactor: adjust cli api

* fix: improve cli plugin loading error messages

* docs: cli pipe

* fix: take plugin configuration into account when messaging between plugins

* refactor: pipe message protobuf interface

* refactor: update(event) -> pipe

* refactor - rename CliMessage to CliPipe

* fix: add is_private to pipes and change some naming

* refactor - cli client

* refactor: various cleanups

* style(fmt): rustfmt

* fix(pipes): backpressure across multiple plugins

* style: some cleanups

* style(fmt): rustfmt

* style: fix merge conflict mistake

* style(wording): clarify pipe permission

1 files changed, 2 insertions, 0 deletions

diff --git a/zellij-utils/src/plugin_api/plugin_permission.proto b/zellij-utils/src/plugin_api/plugin_permission.proto
index a796c748..761384c1 100644
--- a/zellij-utils/src/plugin_api/plugin_permission.proto
+++ b/zellij-utils/src/plugin_api/plugin_permission.proto
@@ -10,4 +10,6 @@ enum PermissionType {
   OpenTerminalsOrPlugins = 4;
   WriteToStdin = 5;
   WebAccess = 6;
+  ReadCliPipes = 7;
+  MessageAndLaunchOtherPlugins = 8;
 }