consolidate EGL init/state

[ikalco]

next step is to use CEGLRenderer in HL

reasoning: egl init, loading, and egl specific funcs (createEGLImage) are all in one place

note:
egl queried formats don't have external modifiers stripped here, but hl impl does, so will deal with it in hl pr

[vaxerski]

I don't see the point? Breaks ABI, API, and what's the benefit?

[ikalco]

completely forgot about this lol
my original thought was that egl init would all be in one place and it could possibly allow for using multiple renderers in hl later or maybe lead to implementing different renderers under a parent class

but i don't want to do all that right now, so abi can be broken then if me or someone else ever tries

after removing the abi breaking stuff, I would say this is just an overall improvement
this should also fix hyprwm/Hyprland#9239 (it crashes in Renderer dtor, prob from eglTerminate on null)

[vaxerski]

technically you break CRenderer abi but is that even used by hl directly?

[ikalco]

uuh CDRMRenderer from aq? no HL doesn't use that directly
my original thought was to move the egl init in CHyprOpenGLImpl to aq by exposing CDRMRenderer (but also renamed it to CEGLRenderer to be more accurate)

[vaxerski]

no, dont