OpenMW+TES3MP installer/launcher

Script that takes care of installing and launching various versions of OpenMW and TES3MP.

⚠️Possibly the worst example of sphagetti code that world has ever seen.⚠️

Script is not yet stable and / or ready for release. Use at your own risk. (It's not like I put some rm -rf / in there. but still, keep in mind that it's a prototype)