Implement Owner Panel features and maintenance mode handling

- Introduced the Owner Panel with new routes and UI components for managing guilds, user blacklists, feature flags, and bot presence.
- Added maintenance mode functionality to prevent non-owner users from executing commands during maintenance periods.
- Enhanced localization with new keys for Owner Panel features in both English and German.
- Updated job processing to include a presence refresh job, ensuring the bot's status is regularly updated.
- Improved environment configuration to support owner user IDs for access control.

apps/webui/src/middleware.ts

@@ -24,5 +24,5 @@ export function middleware(request: NextRequest) {
 }
 
 export const config = {
-  matcher: ['/dashboard/:path*']
+  matcher: ['/dashboard/:path*', '/owner/:path*']
 };