feat: add update notification component with download and install functionality

src/app/components/title-bar/TitleBar.tsx

@@ -5,6 +5,7 @@ import { MatrixClient, RoomEvent, ClientEvent, MatrixEvent, Room, IPushRules } f
 import { useAtomValue } from 'jotai';
 import { useNavigate } from 'react-router-dom';
 import { WindowControls } from './WindowControls';
+import { UpdateNotification } from '../update-notification';
 import * as css from './TitleBar.css';
 import { getUnreadInfos, getOrphanParents, guessPerfectParent, getAllParents } from '../../utils/room';
 import { getCanonicalAliasOrRoomId, getMxIdLocalPart } from '../../utils/matrix';
@@ -615,6 +616,7 @@ export function TitleBar({ mx, children }: TitleBarProps) {
         ))}
         {children}
       </Box>
+      <UpdateNotification />
       <WindowControls />
     </Box>
   );