Add running commands to an action

Add the ability to bind running commands to
an action.

Eg:
```
- action: [Run: {command: "htop",},]
  key: [F: 6,]
``

Optionally the direction and arguments can be
specified:

```
- action: [Run: {command: "htop", args: ["-C",]},]
  key: [F: 7,]
```
The directional splits are analogous to the `[NewPane]` splits.
```
- action: [Run: {command: "htop", args: ["-C",], direction: "Up"},]
  key: [F: 8,]
```

1 files changed, 21 insertions, 1 deletions

diff --git a/zellij-utils/src/input/command.rs b/zellij-utils/src/input/command.rs
index 79bbe5ab..ca505ea2 100644
--- a/zellij-utils/src/input/command.rs
+++ b/zellij-utils/src/input/command.rs
@@ -1,4 +1,5 @@
 //! Trigger a command
+use super::actions::Direction;
 use serde::{Deserialize, Serialize};
 use std::path::PathBuf;
 
@@ -8,9 +9,28 @@ pub enum TerminalAction {
     RunCommand(RunCommand),
 }
 
-#[derive(Clone, Debug, Deserialize, Default, Serialize, PartialEq)]
+#[derive(Clone, Debug, Deserialize, Default, Serialize, PartialEq, Eq)]
 pub struct RunCommand {
     pub command: PathBuf,
     #[serde(default)]
     pub args: Vec<String>,
 }
+
+/// Intermediate representation
+#[derive(Clone, Debug, Deserialize, Default, Serialize, PartialEq, Eq)]
+pub struct RunCommandAction {
+    pub command: PathBuf,
+    #[serde(default)]
+    pub args: Vec<String>,
+    #[serde(default)]
+    pub direction: Option<Direction>,
+}
+
+impl From<RunCommandAction> for RunCommand {
+    fn from(action: RunCommandAction) -> Self {
+        RunCommand {
+            command: action.command,
+            args: action.args,
+        }
+    }
+}