feat(chat): add chat room management functionality

- Created new chat schema in the database.
- Implemented chat room model with necessary fields (title, ownerId, roomTypeId, etc.).
- Added room type model and rights model for chat functionality.
- Developed API endpoints for managing chat rooms, including create, edit, and delete operations.
- Integrated chat room management into the admin interface with a dedicated view and dialog for room creation/editing.
- Added internationalization support for chat room management UI.
- Implemented autocomplete for victim selection in underground activities.
- Enhanced the underground view with new activity types and political target selection.

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

@@ -48,6 +48,50 @@
                 "success": "Die Änderungen wurden gespeichert.",
                 "error": "Die Änderungen konnten nicht gespeichert werden."
             }
+        },
+        "chatrooms": {
+            "title": "[Admin] - Chaträume verwalten",
+            "roomName": "Raumname",
+            "create": "Chatraum anlegen",
+            "edit": "Chatraum bearbeiten",
+            "type": "Typ",
+            "isPublic": "Öffentlich sichtbar",
+            "actions": "Aktionen",
+            "genderRestriction": {
+                "show": "Geschlechtsbeschränkung aktivieren",
+                "label": "Geschlechtsbeschränkung"
+            },
+            "minAge": {
+                "show": "Mindestalter angeben",
+                "label": "Mindestalter"
+            },
+            "maxAge": {
+                "show": "Höchstalter angeben",
+                "label": "Höchstalter"
+            },
+            "password": {
+                "show": "Passwortschutz aktivieren",
+                "label": "Passwort"
+            },
+            "friendsOfOwnerOnly": "Nur Freunde des Besitzers",
+            "requiredUserRight": {
+                "show": "Benötigtes Benutzerrecht angeben",
+                "label": "Benötigtes Benutzerrecht"
+            },
+            "roomtype": {
+                "chat": "Reden",
+                "dice": "Würfeln",
+                "poker": "Poker",
+                "hangman": "Hangman"
+            },
+            "rights": {
+                "talk": "Reden",
+                "scream": "Schreien",
+                "whisper": "Flüstern",
+                "start game": "Spiel starten",
+                "open room": "Raum öffnen",
+                "systemmessage": "Systemnachricht"
+            }
         }
     }
 }