[ATS] Merritt Livestock Trailer v1.0 1.39.x

Merritt Livestock - is a high quality animal transport trailer added for ATS players.

Features Merritt Livestock:
- Autonomous trailer;
- Purchased as property;
- Support for cables;
- Animation of supports;
- Small tuning;
- Advanced hitch;
- Own cargo;
- Available for transportation on regular orders;
- the model has own wheels;
- working brake and reverse lights;
- detailed model.

Tested on game version 1.39.x