input: Write a python function to fetch booking details by user_id from a list of dictionaries.
  assert get_booking_details_by_user_id(bookings, 1) == [{'user_id': 1, 'movie_id': 1, 'movie_name':'Joker', 'seat_numbers':[1,2,3,4],'payment_method':'credit'}]
  assert get_booking_details_by_user_id(bookings, 2) == [{'user_id': 2, 'movie_id': 2, 'movie_name':'Hobbs and Shaw', 'seat_numbers':[3,4],'payment_method':'debit'}]
  assert get_booking_details_by_user_id(bookings, 4) == []
output: def get_booking_details_by_user_id(bookings, user_id):
      return [booking for booking in bookings if booking['user_id'] == user_id]
  
  bookings = [
      {'user_id': 1, 'movie_id': 1, 'movie_name': 'Joker', 'seat_numbers': [1, 2, 3, 4], 'payment_method': 'credit'},
      {'user_id': 2, 'movie_id': 2, 'movie_name': 'Hobbs and Shaw', 'seat_numbers': [3, 4], 'payment_method': 'debit'},
      {'user_id': 3, 'movie_id': 3, 'movie_name': 'Avengers', 'seat_numbers': [5, 6], 'payment_method': 'paypal'}
  ]