treewide(refactor): rename files to follow the same style

lib/models/requests/get_room_state.dart

@@ -0,0 +1,16 @@
+import "package:freezed_annotation/freezed_annotation.dart";
+part "get_room_state.freezed.dart";
+part "get_room_state.g.dart";
+
+@freezed
+abstract class GetRoomStateRequest with _$GetRoomStateRequest {
+  const factory GetRoomStateRequest({
+    required String roomId,
+    @Default(false) bool refetch,
+    @Default(false) bool fetchMembers,
+    @Default(false) bool includeMembers,
+  }) = _GetRoomStateRequest;
+
+  factory GetRoomStateRequest.fromJson(Map<String, Object?> json) =>
+      _$GetRoomStateRequestFromJson(json);
+}