apprt/embedded: add the tab overview to the enum

include/ghostty.h

@@ -505,6 +505,7 @@ typedef enum {
   GHOSTTY_ACTION_NEW_SPLIT,
   GHOSTTY_ACTION_CLOSE_ALL_WINDOWS,
   GHOSTTY_ACTION_TOGGLE_FULLSCREEN,
+  GHOSTTY_ACTION_TOGGLE_TAB_OVERVIEW,
   GHOSTTY_ACTION_TOGGLE_WINDOW_DECORATIONS,
   GHOSTTY_ACTION_GOTO_TAB,
   GHOSTTY_ACTION_GOTO_SPLIT,

src/apprt/action.zig

@@ -174,6 +174,7 @@ pub const Action = union(Key) {
         new_split,
         close_all_windows,
         toggle_fullscreen,
+        toggle_tab_overview,
         toggle_window_decorations,
         goto_tab,
         goto_split,