feat(match3): Erweiterung der Match3-Admin-Funktionalitäten und -Modelle

- Implementierung neuer Endpunkte für die Verwaltung von Match3-Kampagnen, Levels, Objectives und Tile-Typen im Admin-Bereich.
- Anpassung der Admin-Services zur Unterstützung von Benutzerberechtigungen und Fehlerbehandlung.
- Einführung von neuen Modellen und Assoziationen für Match3-Levels und Tile-Typen in der Datenbank.
- Verbesserung der Internationalisierung für Match3-spezifische Texte in Deutsch und Englisch.
- Aktualisierung der Frontend-Routen und -Komponenten zur Verwaltung von Match3-Inhalten.

frontend/src/i18n/locales/en/admin.json

@@ -1,3 +1,59 @@
 {
-    
+    "admin": {
+        "match3": {
+            "title": "Manage Match3 Levels",
+            "newLevel": "Create New Level",
+            "editLevel": "Edit Level",
+            "deleteLevel": "Delete Level",
+            "confirmDelete": "Do you really want to delete this level?",
+            "levelName": "Name",
+            "levelDescription": "Description",
+            "boardWidth": "Width",
+            "boardHeight": "Height",
+            "moveLimit": "Move Limit",
+            "levelOrder": "Order",
+            "boardLayout": "Board Layout",
+            "tileTypes": "Available Tile Types",
+            "actions": "Actions",
+            "edit": "Edit",
+            "delete": "Delete",
+            "save": "Save",
+            "cancel": "Cancel",
+            "update": "Update",
+            "create": "Create",
+            "boardControls": {
+                "fillAll": "Activate All",
+                "clearAll": "Deactivate All",
+                "invert": "Invert"
+            },
+            "loading": "Loading levels...",
+            "retry": "Retry",
+            "availableLevels": "Available Levels: {count}",
+            "levelFormat": "Level {number}: {name}",
+            "levelObjectives": "Level Objectives",
+            "objectivesTitle": "Victory Conditions",
+            "addObjective": "Add Objective",
+            "removeObjective": "Remove",
+            "objectiveType": "Type",
+            "objectiveTypeScore": "Collect Score",
+            "objectiveTypeMatches": "Make Matches",
+            "objectiveTypeMoves": "Use Moves",
+            "objectiveTypeTime": "Keep Time",
+            "objectiveTypeSpecial": "Special Goal",
+            "objectiveOperator": "Operator",
+            "operatorGreaterEqual": "Greater or equal (≥)",
+            "operatorLessEqual": "Less or equal (≤)",
+            "operatorEqual": "Equal (=)",
+            "operatorGreater": "Greater than (>)",
+            "operatorLess": "Less than (<)",
+            "objectiveTarget": "Target Value",
+            "objectiveTargetPlaceholder": "e.g. 100",
+            "objectiveOrder": "Order",
+            "objectiveOrderPlaceholder": "1, 2, 3...",
+            "objectiveDescription": "Description",
+            "objectiveDescriptionPlaceholder": "e.g. Collect 100 points",
+            "objectiveRequired": "Required for level completion",
+            "noObjectives": "No victory conditions defined. Click 'Add Objective' to create some."
+        }
+    }
 }