Allow data= lines in openmw.cfg to use environment variables
basically this just makes the data= lines a little easier to read, additionally it can help with migrating your config from one system to another and even syncing up config between systems
if doing something like data="$MW_MODS/Patch For Purists"
isn't possible then maybe something like pythons f strings would? i.e data=f"{MW_MODS}/Patch For Purists"