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/bot/src/index.ts

@@ -119,6 +119,12 @@ if (!isShard) {
     } catch (error) {
       logger.error({ error }, 'Failed to register application commands');
     }
+    try {
+      const { applyBotPresence } = await import('./presence.js');
+      await applyBotPresence(context);
+    } catch (error) {
+      logger.warn({ error }, 'Failed to apply initial bot presence');
+    }
   });
 
   client.on(Events.MessageCreate, async (message) => {