generate_assets.py: Use environment.load_from_file() function
generate_assets.py: Use environment.load_from_file() function

kerel-fs/skylines,snip/skylines,RBE-Avionik/skylines,Turbo87/skylines,skylines-project/skylines,TobiasLohner/SkyLines,RBE-Avionik/skylines,shadowoneau/skylines,TobiasLohner/SkyLines,skylines-project/skylines,Turbo87/skylines,Harry-R/skylines,snip/skylines,shadowoneau/skylines,TobiasLohner/SkyLines,shadowoneau/skylines,Harry-R/skylines,Turbo87/skylines,kerel-fs/skylines,Harry-R/skylines,RBE-Avionik/skylines,RBE-Avionik/skylines,shadowoneau/skylines,Turbo87/skylines,snip/skylines,kerel-fs/skylines,Harry-R/skylines,skylines-project/skylines,skylines-project/skylines