feat(tournament): add group match creation and enhance match handling

- Implemented createGroupMatches function to generate matches for existing groups without altering group assignments.
- Updated resetMatches function to support optional class filtering when resetting group matches.
- Enhanced frontend components to filter and display group matches based on selected class, improving user experience.
- Adjusted tournament results display to reflect accurate match statistics, including wins and losses.

backend/controllers/tournamentController.js

@@ -174,6 +174,21 @@ export const fillGroups = async (req, res) => {
     }
 };
 
+// 7b. Gruppenspiele erstellen ohne Gruppenzuordnungen zu ändern
+export const createGroupMatches = async (req, res) => {
+    const { authcode: token } = req.headers;
+    const { clubId, tournamentId, classId } = req.body;
+    try {
+        await tournamentService.createGroupMatches(token, clubId, tournamentId, classId);
+        // Emit Socket-Event
+        emitTournamentChanged(clubId, tournamentId);
+        res.sendStatus(204);
+    } catch (error) {
+        console.error(error);
+        res.status(500).json({ error: error.message });
+    }
+};
+
 // 8. Gruppen mit ihren Teilnehmern abfragen
 export const getGroups = async (req, res) => {
     const { authcode: token } = req.headers;
@@ -341,9 +356,9 @@ export const resetGroups = async (req, res) => {
 
 export const resetMatches = async (req, res) => {
     const { authcode: token } = req.headers;
-    const { clubId, tournamentId } = req.body;
+    const { clubId, tournamentId, classId } = req.body;
     try {
-        await tournamentService.resetMatches(token, clubId, tournamentId);
+        await tournamentService.resetMatches(token, clubId, tournamentId, classId || null);
         // Emit Socket-Event
         emitTournamentChanged(clubId, tournamentId);
         res.sendStatus(204);