MOD ENHANCED CAT 745C "WENDIGO" M181 FOR SNOWRUNNER

I've added a new top-level engine to the CAT, as well as a bunch of other options to make your 745C look different and more capable.

Changes from stock CAT 745C include:

Revised transmission layout (now switchable between R-4WD and A-6WD)
Hand brake on all axles
Improved steering responsiveness
Locked diffs
Realistic fuel supply
New HD automatic winch
Truck spawns on custom Tayga super-heavy tires
Increased articulation
Extended wheel track
Increased tire selection, including custom wheels, by Quasimiao
Added WWS TS backup beeper & Tatarin turbo whistle
Added special HD CrawlerBox transmission
Added top-level knowledge-friendly engine
Raised and active suspension options
No region / exploration / level lock
Added winch points
New frame add-ons including cranes
New visual and operational settings
Added the ability to tow medium trailers
Reinforced articulated motor
Brighter "hidden style" stock lanterns
Corrected side light colors
Cleaned up code