Racing features

[lekeno]

Support racing in elite with various convenience and features.

[lekeno]

TODOs for single player race:

• [X] Add known canyon locations to BOI
• [ ] Add waypoints for canyon races in Colonia (for testing)
• [ ] Add waypoints for canyon races in Bubble
• [ ] Add known rally locations to BOI
• [ ] Add known SRV cross locations to BOI
• [ ] Add known stadiums locations to BOI (rare enough or too common?)
• [X] Add waypoints recording feature to facilitate the recording of paths
• [X] Waypoints with customizable tolerance, and max altitude
• [X] Circuit object to go through waypoints, and take care of times (lap time, best), start/finish state
• [x] Client logic to instantiate a Circuit
• [X] Logic to advance to the next waypoint as the player reaches the current one
• [ ] Display guidance to next waypoint
• [ ] Display lap time, best
• [ ] Display Mini map
• [ ] Display current position
• [ ] Display ghost racer