Add bar widget to pause and resume the key display

A keyboard glyph in the bar (WidgetButton, right section by default)
toggles a pause flag at $XDG_RUNTIME_DIR/omarchy-key-visualizer.paused that
the panel and every bar widget instance watch, so a click on any monitor
updates all of them. While paused the panel ignores key state and hides;
the button dims. Also exposes pause/resume/toggle over the key-visualizer IPC
target.

manifest.json

@@ -2,11 +2,19 @@
   "schemaVersion": 1,
   "id": "felixzsh.key-visualizer",
   "name": "Key Visualizer",
-  "version": "1.1.0",
+  "version": "1.2.0",
   "description": "Shows the keys you press on screen. Great for keybinding tutorials, demos, and screencasts.",
-  "kinds": ["panel"],
+  "kinds": ["panel", "bar-widget"],
   "keepLoaded": true,
   "entryPoints": {
-    "panel": "KeyVisualizer.qml"
+    "panel": "KeyVisualizer.qml",
+    "barWidget": "BarWidget.qml"
+  },
+  "barWidget": {
+    "displayName": "Key Visualizer",
+    "description": "Pause or resume the on-screen key display",
+    "category": "Tools",
+    "allowMultiple": false,
+    "defaultSection": "right"
   }
 }