[Games] Cosmo Cosmic adventure

[tle]

The cosmo engine project provides an alternative engine to run assets of the original DOS game Cosmo Cosmic adventure.

There is a bug with SDL_free which causes memory leak segfault. Simply replace `SDL_free` with `free` and the game would run nicely.

[ClassicHasClass]

Related, you can play Duke Nukem II: https://www.talospace.com/2022/07/tonights-game-on-openpower-duke-nukem-ii.html