Added three vehicles:
2000 Ford F350 Super Duty (Capable of Towing the boat)
2021 Suburban (EMS with an SL)
2017 Silverado (CSI Unit)
Changes:
Overhaul of many ELS XMLs, patrol units now have custom scan pool for park mode, light patterns change with sirens 1-4
Small tweaks to current ytds, cleaning up some unneeded textures to increase performance
