Sound Fixes Pack v19.13

- Pack provides improvements to common sounds in the game. It includes euphonious, relaxing and real sounds.
- The goal of the mod is to make the game's sounds feel like real life.

CHANGELOG 19.13

2 new real engine sounds for Union Pacific 2572 freight train locomotive. [ATS edition]
1 new real Cummins N14 Celect Plus engine sound added to array for Kenworth W900's in AI traffic. [ATS edition]
Brought back real engine sound for MCI MC-12 Greyhound bus in AI traffic. [ATS edition]
4 new real horn sounds for MCI MC-12 Greyhound bus in AI traffic. [ATS edition]
Sound range improvements for movers. [ETS2 edition]
Removed 1 Mack RD engine sound from array. [ATS edition]