feat(Moderation): enhance moderation reporting and user feedback

- Added user blocking checks in authentication and reporting processes, returning appropriate error responses.
- Expanded moderation report functionality to include new target types and optional fields for reports.
- Implemented a new API endpoint to retrieve the count of open moderation reports.
- Enhanced frontend components to allow users to report profiles, images, and guestbook entries, with corresponding UI updates.
- Updated internationalization files to include new strings for reporting features in both German and English.

backend/routers/adminRouter.js

@@ -70,6 +70,7 @@ router.get('/falukant/region-distances', authenticate, adminController.getRegion
 router.post('/falukant/region-distances', authenticate, adminController.upsertRegionDistance);
 router.delete('/falukant/region-distances/:id', authenticate, adminController.deleteRegionDistance);
 router.get('/moderation/reports', authenticate, moderationController.listReports);
+router.get('/moderation/reports/open-count', authenticate, moderationController.getOpenReportCount);
 router.post('/moderation/reports/:reportId/status', authenticate, moderationController.updateReportStatus);
 router.post('/falukant/npcs/create', authenticate, adminController.createNPCs);
 router.get('/falukant/npcs/status/:jobId', authenticate, adminController.getNPCsCreationStatus);