Different game types / win modes

[MirceaKitsune]

A pretty feature I was thinking about Vdrift adopting are different game types. By default, Vdrift seems to give the win to whoever crosses the finish line first. I was thinking of 5 different game modes / win modes we could have, without needing to modify tracks to code extra info:

- Race: Current game type, whoever crosses the line first wins.

- Time: Whoever has the fastest lap (or maybe fastest overall time) wins, regardless of who crosses first.

- Knockout: The number of laps equals the number of opponents, and every lap the last person leaves the match until only two players remain in the last lap.

- Drift: Whoever has most drift points wins, regardless of time or who crosses first. Drift points already seem to be calculated (Score so we could make a game type where you win over them.

- Speed: The winner is the one who reached the highest top speed or (different idea) had the best average speed, once everyone crosses the line. Was thinking of a Speedtrap / Radar mode, but that would require track modification to add the radars.

And maybe later on, there could even be some sort of a team gametype and stuff. I think those basic ones would be a pretty thing though