MARXEN ST2/ST3 PACK

The basic model is from [deAM] Akkermacker thanks to him for the release! :Thank you:
What have I changed:
The little barrel got a tape drive!
And both got three new BKT tire configs!
Dan both got color configs main color and rim color!
Precision farming is also installed, so the Johne Deere sensor!

Marx ST 2.20:
- Price: €93,000
- Capacity: 20,000l
- Required HP: 220HP

Marx ST 3.25:
- Price: 132,000€
- Capacity: 25,000l
- Required HP: 250HP