[Repositories] Convert database.cpp to Repositories (#4054)

* [Repositories] Convert database.cpp to Repositories

- Convert all database.cpp methods to repositories where possible.

* Final push.

* Cleanup

* Cleanup

* Update database.h

* Fix crash

* Update database.cpp

common/repositories/group_id_repository.h

@@ -44,7 +44,15 @@ public:
      */
 
 	// Custom extended repository methods here
-
+	static void ClearAllGroups(Database& db)
+	{
+		db.QueryDatabase(
+			fmt::format(
+				"DELETE FROM `{}`",
+				TableName()
+			)
+		);
+	}
 };
 
 #endif //EQEMU_GROUP_ID_REPOSITORY_H