feat(a2ui): Implement A2UI backend with question handling and WebSocket support

- Added A2UITypes for defining question structures and answers.
- Created A2UIWebSocketHandler for managing WebSocket connections and message handling.
- Developed ask-question tool for interactive user questions via A2UI.
- Introduced platformUtils for platform detection and shell command handling.
- Centralized TypeScript types in index.ts for better organization.
- Implemented compatibility checks for hook templates based on platform requirements.

ccw/frontend/src/locales/en/common.json

@@ -35,6 +35,7 @@
     "submit": "Submit",
     "reset": "Reset",
     "resetDesc": "Reset all user preferences to their default values. This cannot be undone.",
+    "saving": "Saving...",
     "resetConfirm": "Reset all settings to defaults?",
     "resetToDefaults": "Reset to Defaults",
     "enable": "Enable",
@@ -68,7 +69,9 @@
     "creating": "Creating...",
     "deleting": "Deleting...",
     "label": "Status",
-    "openIssues": "Open Issues"
+    "openIssues": "Open Issues",
+    "enabled": "Enabled",
+    "disabled": "Disabled"
   },
   "priority": {
     "low": "Low",