Introduce penalty for destroying NPC's crops

This mod penalizes taking shortcuts trough NPC-controlled fields. Penalty is calculated by taking into account:
- wheel size and type
- number of wheels that touch the crops
- distance driven over cultivated ground
- crop type
- crop growth stage

Changelog 1.1.0.0:
- Multiplayer support introduced
- Genaral code cleanup
- Additional crops (MaizePlus mod)