update v16.9

A few updates to make everything tidier, since the asset pack is getting massive 

- Started producing all the single files, this is a super long process since I've decided to name them all also based on the sprite and not only based on the theme
- Added all the "Floor_Modular_Buildings" theme single files
- Added all the "Shopping_Center_and_Markets" theme single files 

See you and happy game-making! :)