Mack Anthem 6x4 Base Game Edit

Primary focus was the day cab options and configurations.

Credits: Expendables 389 for headache rack, 82 Studios for Strobe light from the superlinerX.

Changelog 1.0.0.1

- modDesc version updated

- Original sound files for the MP8 engine is by @KapitanKriechbaum

- engine (jake) brake can be toggled on and off manually