add a shader name converter script for eX->exx, trak4->trak4x, trak5->trak5x
-rw-r--r-- 3680 .gitattributes
-rw-r--r-- 27 .gitignore
drwxr-xr-x - env
drwxr-xr-x - maps
drwxr-xr-x - models
drwxr-xr-x - scripts
drwxr-xr-x - sounds
drwxr-xr-x - textures