joinCall static method
Joins a call.
This method initiates the process of joining a call. Upon completion,
the provided callback function flyCallback is invoked with a FlyResponse object,
which contains information about the success or failure of the operation.
Returns:
flyCallback - A function that is called upon completion of the operation.
Implementation
static Future<void> joinCall(
    {required Function(FlyResponse response) flyCallback}) {
  return FlyChatFlutterPlatform.instance.joinCall(flyCallback);
}