Use gnome extension for mesa to enable graphics acceleration with

[tobhe]

adreno and asahi.

Same change as in diddlesnaps/supertuxkart#24.

[tobhe]

ping

[eslerm]

thank you @lucyllewy !

Running --beta (release-20231010) on Ubuntu Asahi runs great:

$ openra.ra 
Platform is Linux (Arm64)
Engine version is release-20231010
Runtime: .NET CLR 6.0.23
Using SDL 2 with OpenGL (Embedded) renderer
Desktop resolution: 1280x800
No custom resolution provided, using desktop resolution
Using resolution: 1280x800
Using window scale 1.00
OpenGL renderer: Apple M2 (G14G B0)
OpenGL version: OpenGL ES 3.1 Mesa 23.3.0~pre20230821-1asahi1.22.04
Using default sound device
Internal mods:
	cnc: Tiberian Dawn (release-20231010)
	d2k: Dune 2000 (release-20231010)
	modcontent: Mod Content Manager (release-20231010)
	ra: Red Alert (release-20231010)
	ts: Tiberian Sun (release-20231010)
External mods:
	ra-release-20231010: Red Alert (release-20231010)
Loading mod: ra
Loading mod: modcontent
Loading mod: ra