getFileList static method
업로드 파일 목록 조회
Implementation
static Future<List<FileModel>> getFileList({required String roomId}) async {
  Uri uri = ApiPath.getFileList.addGetParam({'roomId': roomId});
  final response = await get(uri);
  final body = json.decode(response.body);
  List<FileModel> list = [
    for (var i = 0; i < body['data']['list'].length; i++)
      FileModel.fromJson(body['data']['list'][i] as Map<String, dynamic>)
  ];
  return list;
}