COMTOIS Shed 3 in 1 v1.0.0.0

From the Comtois series, here is the 3-in-1 shed:
- you can have an open shed
- by clicking on the tools you can build a wall in the background
- by clicking on the fan you can build a silo with ventilation under the paving
Placeable mod, construction cost of 32,000€ and maintenance of 30€.