Add method to rate a parking lot
Add ability to list an individual lot for parking.
Make the ParkingLot follow the POJO pattern
RegistrationClient should take in a ParkingChoice to list, not a lot
Change ParkingRating to use the POJO pattern
Make GamedayService use the enum
Get the RegistrationClient ready for the new rateLot
Add some extra helper code on the RegistrationClient
Get the rate lot function working correctly.
It's a bit funky - requests seem to hit the server about 90% of the
time...