Racing features

[lekeno]

Support racing in elite with various convenience and features.

[lekeno]

TODOs for single player race:

• 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?)
• Add waypoints recording feature to facilitate the recording of paths
• Waypoints with customizable tolerance, and max altitude
• Circuit object to go through waypoints, and take care of times (lap time, best), start/finish state
• Client logic to instantiate a Circuit
• 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