feat(plugins): some APIs for controlling and receiving information about other panes (#3515)

* add context to opening command panes, and events for their start/finish

* show/hide other panes plugin apis

* get tests to pass

* style(fmt): rustfmt

* update plugin test snapshots

1 files changed, 15 insertions, 0 deletions

diff --git a/zellij-utils/src/plugin_api/event.proto b/zellij-utils/src/plugin_api/event.proto
index c48030aa..ac1bdd29 100644
--- a/zellij-utils/src/plugin_api/event.proto
+++ b/zellij-utils/src/plugin_api/event.proto
@@ -42,6 +42,8 @@ enum EventType {
     SessionUpdate = 16;
     RunCommandResult = 17;
     WebRequestResult = 18;
+    CommandPaneOpened = 19;
+    CommandPaneExited = 20;
 }
 
 message EventNameList {
@@ -65,9 +67,22 @@ message Event {
     SessionUpdatePayload session_update_payload = 13;
     RunCommandResultPayload run_command_result_payload = 14;
     WebRequestResultPayload web_request_result_payload = 15;
+    CommandPaneOpenedPayload command_pane_opened_payload = 16;
+    CommandPaneExitedPayload command_pane_exited_payload = 17;
   }
 }
 
+message CommandPaneOpenedPayload {
+  uint32 terminal_pane_id = 1;
+  repeated ContextItem context = 2;
+}
+
+message CommandPaneExitedPayload {
+  uint32 terminal_pane_id = 1;
+  optional int32 exit_code = 2;
+  repeated ContextItem context = 3;
+}
+
 message SessionUpdatePayload {
   repeated SessionManifest session_manifests = 1;
   repeated ResurrectableSession resurrectable_sessions = 2;