Add global /about command and configuration

- Introduced `BotAboutConfig` model for managing the global `/about` message in the owner panel.
- Implemented the `/about` command with localization support and integrated it into the help catalog.
- Enhanced the dashboard with a new owner section for configuring the `/about` message type and content.
- Updated components to handle the new command and its interactions, including support for different message formats (TEXT, EMBED, COMPONENTS_V2).
- Added localization entries for the `/about` command in English and German, improving accessibility for users.
- Documented the implementation in the phase tracking documentation for future reference.

apps/bot/src/module-gates.test.ts

@@ -20,6 +20,7 @@ describe('moduleForCommand', () => {
   it('leaves core commands unmapped', () => {
     expect(moduleForCommand('help')).toBeNull();
     expect(moduleForCommand('info')).toBeNull();
+    expect(moduleForCommand('about')).toBeNull();
     expect(moduleForCommand('gdpr')).toBeNull();
   });
 });