feat(tournament): add participant gave-up functionality and UI updates

- Implemented setParticipantGaveUp and setExternalParticipantGaveUp methods in tournamentController to handle participant resignation.
- Updated ExternalTournamentParticipant and TournamentMember models to include a gaveUp field for tracking resignation status.
- Enhanced tournamentRoutes to include new endpoints for updating gave-up status.
- Modified TournamentGroupsTab and TournamentParticipantsTab components to display and manage gave-up status visually.
- Added localization strings for "gave up" and related hints in German.
- Updated TournamentResultsTab to reflect gave-up status in match results.

backend/routes/tournamentRoutes.js

@@ -20,6 +20,7 @@ import {
   resetMatches,
   removeParticipant,
   updateParticipantSeeded,
+  setParticipantGaveUp,
   deleteMatchResult,
   reopenMatch,
   deleteKnockoutMatches,
@@ -28,6 +29,7 @@ import {
   getExternalParticipants,
   removeExternalParticipant,
   updateExternalParticipantSeeded,
+  setExternalParticipantGaveUp,
   getTournamentClasses,
   addTournamentClass,
   updateTournamentClass,
@@ -54,6 +56,7 @@ router.post('/participant', authenticate, addParticipant);
 router.post('/participants', authenticate, getParticipants);
 router.delete('/participant', authenticate, removeParticipant);
 router.put('/participant/:clubId/:tournamentId/:participantId/seeded', authenticate, updateParticipantSeeded);
+router.put('/participant/:clubId/:tournamentId/:participantId/gave-up', authenticate, setParticipantGaveUp);
 router.post('/modus', authenticate, setModus);
 router.post('/groups/reset', authenticate, resetGroups);
 router.post('/matches/reset', authenticate, resetMatches);
@@ -82,6 +85,7 @@ router.post('/external-participant', authenticate, addExternalParticipant);
 router.post('/external-participants', authenticate, getExternalParticipants);
 router.delete('/external-participant', authenticate, removeExternalParticipant);
 router.put('/external-participant/:clubId/:tournamentId/:participantId/seeded', authenticate, updateExternalParticipantSeeded);
+router.put('/external-participant/:clubId/:tournamentId/:participantId/gave-up', authenticate, setExternalParticipantGaveUp);
 
 // Tournament Classes
 router.get('/classes/:clubId/:tournamentId', authenticate, getTournamentClasses);