Niche DOS 3D APIs (Vibe coded)

[LeonG-ZA]

With the assistance of Claude I've implemented some other 3D APIs that can be used in DOS and Windows 9x.
I wouldn't recommend merging any of these and rather use them as references for proper future work.
I've tested a only few games on each

PowerVR PCX1/PCX2 (PowerSGL):
https://github.com/LeonG-ZA/dosbox-x/tree/powersgl
[pci]
enable pci bus = true # the card is a PCI device (true is the default)
[powervr]
powervr_card = pcx1 # false (default), pcx1 or pcx2

Rendition Vérité V1000 (Speedy3D/RRedline/CGL) :
https://github.com/LeonG-ZA/dosbox-x/tree/verite
[dosbox]
machine=svga_verite
[verite]
verite_cgl=native # native or hle
verite_irq=5

ATi RAGE (ATICIF):
https://github.com/LeonG-ZA/dosbox-x/tree/ati-rage-3dcif
[dosbox]
machine=svga_ati_3drage
machine=svga_ati_3drage2