Add actions for calls (#28048)

Add the following actions for use while calling: `Mute`, `Deafen`,
`ShareProject`, `ScreenShare`, `LeaveCall`

We were also interested in adding push-to-talk functionality for mute,
but that will go in a followup PR

Release Notes:

- Call actions (mute/screenshare/etc.) can now be bound to keys and run from the command palette.

---------

Co-authored-by: Ben Kunkle <ben.kunkle@gmail.com>
Co-authored-by: Ben Kunkle <ben@zed.dev>

crates/workspace/src/workspace.rs

@@ -5808,7 +5808,17 @@ pub fn last_session_workspace_locations(
         .log_err()
 }
 
-actions!(collab, [OpenChannelNotes]);
+actions!(
+    collab,
+    [
+        OpenChannelNotes,
+        Mute,
+        Deafen,
+        LeaveCall,
+        ShareProject,
+        ScreenShare
+    ]
+);
 actions!(zed, [OpenLog]);
 
 async fn join_channel_internal(