feat(tournament): add cleanup logic for orphaned matches

- Implemented a new method to clean up orphaned matches where at least one player no longer exists, enhancing data integrity in tournament management.
- Added a corresponding route and frontend functionality to trigger the cleanup process, allowing users to easily remove invalid match records.
- Updated localization strings to support the new feature, ensuring clarity in the user interface.

backend/controllers/tournamentController.js

@@ -420,6 +420,19 @@ export const resetMatches = async (req, res) => {
     }
 };
 
+export const cleanupOrphanedMatches = async (req, res) => {
+    const { authcode: token } = req.headers;
+    const { clubId, tournamentId } = req.body;
+    try {
+        const result = await tournamentService.cleanupOrphanedMatches(token, clubId, tournamentId);
+        emitTournamentChanged(clubId, tournamentId);
+        res.status(200).json(result);
+    } catch (err) {
+        console.error(err);
+        res.status(500).json({ error: err.message });
+    }
+};
+
 export const removeParticipant = async (req, res) => {
     const { authcode: token } = req.headers;
     const { clubId, tournamentId, participantId } = req.body;