Alpha Tyre Wear and Thermals Redux 0.19.1

Changes:
- Each vehicle has their own set of front brake cooling and rear brake cooling sliders, these slider can found found within the vehicles tuning settings to influence how hot/cold the brakes get and, as a result, how hot/cold the tyres get. These are saved with the .pc vehicle configuration file so the settings will be saved in configs and can be shared with others.
- Thermals rework with big help from Cyborella! Using sim data and real world data so the results will be far more accurate than previously
- Increased wear rate again which will allow wear to be a factor in longer stints. The next update will focus heavily on wear behavior and aims to greatly improve the intuitiveness of wear rate and its effect of grip.