feat: add keyboard shortcuts for mic, video, and chat toggling in InRoom component

Author: Shreyanshi210205

frontend/package-lock.json

@@ -28,6 +28,7 @@
     "react": "^19.2.0",
     "react-dom": "^19.2.0",
     "react-hook-form": "^7.65.0",
+    "react-hotkeys": "^2.0.0",
     "react-router-dom": "^7.9.4",
     "shadcn": "^3.4.1",
     "socket.io-client": "^4.8.1",