Liebherr T284 and Cat

This modification is not mine, it has only been improved.
- Dust now comes out of the wheels when it is moving.
- Dumper logos are seen in high definition.
- Dumper filling is appropriate.
- In the Liebherr version some textures are missing, they are transparent, it could not be solved.
- The model of this dumper is that of the real Liebherr T284 and not the Caterpillar.