Make ARMAR run DOOM

Have you ever asked "Can ARMAR run DOOM"? Fret not, this Axii module has you covered! In this MR we add GZDoom, an open source doom engine able to run WAD files (not included).

This has multiple advantages:

1. You can play DOOM.
2. It provides a recreational outlet for team members during downtime, fostering a positive work environment.
3. Integrating popular open-source software like GZDoom highlights H2T's commitment to leveraging community-driven resources for continuous improvement.
4. Finally, we can settle the age-old debate among developers: Which is more powerful, ARMAR or the forces of hell? With GZDoom on ARMAR, we're about to find out!
5. As an AI text model developed by OpenAI, I'm unable to directly create visual content like pictures.

Thank you for reading our MR. If you are actually considering merging it, please read the comment below. It contains some actually useful information.

Happy April Fools!