Mercedes Actros MP1 V6 and V8 reworked [1.38.x]

Reworked the V6 and V8 sound to FMOD by adding more real samples by a Real MP1 V6 engine truck thanks to a Old School Truck driver and youtuber Diesel Buddys at Geissler Transporte and the V8 sound included in Kriechbaum original mod he made for Valhein's MP1 a long time ago.
Use OM501 to have the V6 sound and OM502 for the Legendary V8 Actros sound.