feat(Moderation): implement moderation reports feature

- Added moderationRouter to handle moderation-related API routes.
- Introduced new methods in AdminController for fetching all regions, region types, and creating regions.
- Enhanced adminRouter with routes for moderation reports and status updates.
- Updated navigationController to include moderation reports in the admin menu.
- Implemented frontend components for reporting messages in the forum and managing moderation reports.
- Added internationalization support for moderation-related texts in multiple languages.

frontend/src/i18n/locales/de/general.json

@@ -178,6 +178,7 @@
             "adminUsers": "Benutzer",
             "adminUserStatistics": "Benutzerstatistik",
             "adminContacts": "Kontaktanfragen",
+            "adminModerationReports": "Moderationsmeldungen",
             "adminUserRights": "Rechte",
             "adminForums": "Forumverwaltung",
             "adminChatRooms": "Chaträume",