getAllOrganizations method
Get all organizations
Implementation
Future<List<Organization>> getAllOrganizations() async {
  try {
    final response = await dio.get(
      "/organization/list",
      options: await getOptions(isTokenRequired: true),
    );
    return response.data.map((e) => Organization.fromJson(e)).toList();
  } catch (e) {
    final message = getErrorMessage(e);
    if (message == null) rethrow;
    throw message;
  }
}