Get work shop

01)--- Open FV2

02)---Buy footbridge wood in market and place it on farm

03)---Open Cheat Engine 

04)---Change Value type = string 

05)---Scan for   e_deco_footbridge_wood

06)---Change  e_building_workshop_l1

07)--- put it to inventory and RELOAD..... Now You Have 
          Workshop in your invntory