Fix for the Pits Leaderboard in AssettoServer

[VeryWetRain]

my hack of code I'm using as a fix for my current server

[VeryWetRain]

• Added Name and Guid fields to EntryCarResult
• Initialize EntryCarResult whenever a player connects or whenever a Session restarts
  • I would prefer if this could be done once though
• Pre-sort CurrentSession.Results by Name before transforming
  • Custom string sort because null sorts above letter. Although I'm not much of a C# dev so maybe there's a better way there.
• Pass CurrentSession.Results to CarListResponse so the Name field can be used for disconnected players.

[VeryWetRain]

oh shoot, for EntryCarResult, I defaulted name to "-" because I wanted to see those empty entries on my server, but I think an empty string would be preferred. It would also be closer to vanilla if it was empty.

edit: ah whatever, ill update the PR so it makes more sense

[compujuckel]

Thanks!