shader overhaul

so i noticed that the pbr shader lowkey looked kinda ugly and my microfacet solver was buns af so i js spent a while fixing it up and basically ended up going down a rabbit hole of tonemapping and completely rewrote the whole thing

i switched from some random generic tonemapping to khronos standard neutral pbr mapping, which i think looks wayyyyyy better, the colors actually feel accurate now

i also spent a little while setting up the shader to support texture colors when i get that all working

it is wayyy better now, especially metallic things

i also started setting up for texture imports but right now its only albedo and it does NOT work in the slightest lmao

i think i will hopefully have texture importing and mapping done by next devlog, but uhhhhh…. no promises