add Tournaments and Guest Page, add template for empty sites, extend user and db service

src/ez_lan_manager/services/DatabaseService.py

@@ -518,3 +518,18 @@ class DatabaseService:
         except Exception as e:
             logger.warning(f"Error setting user profile picture: {e}")
             return None
+
+    def get_all_users(self) -> list[User]:
+        results = []
+        cursor = self._get_cursor()
+        try:
+            cursor.execute("SELECT * FROM users;")
+            self._connection.commit()
+        except Exception as e:
+            logger.warning(f"Error getting all users: {e}")
+            return results
+
+        for user_raw in cursor.fetchall():
+            results.append(self._map_db_result_to_user(user_raw))
+
+        return results

src/ez_lan_manager/services/UserService.py

@@ -16,6 +16,9 @@ class UserService:
     def __init__(self, db_service: DatabaseService) -> None:
         self._db_service = db_service
 
+    def get_all_users(self) -> list[User]:
+        return self._db_service.get_all_users()
+
     def get_user(self, accessor: Optional[Union[str, int]]) -> Optional[User]:
         if accessor is None:
             return