A pack for the production of its own agricultural products.
RokoMaster - Produces lime.
Price: 12.500$.

Fertimaster - produces fertilizers.
Price: 19.500$.

PigMaster - produces pig food.
Price: 22.500$

MixMaster - produces feed for cows.
Price: 27.500$.

In version 1.0.0.1:
- Added SeedMaster for seed production.