fix: get clear example working with SIMD AABB

feat: SIMD_AABB -> AABB, add UAABB for unsigned types

feat: implement simd_aabb type

feat: rip render caching out of toplevel surface and move to canvas

re-add xdg_decoration support

add x^2.2 gamma approximation, add to benchmarks

fix clipping rect_texture src_area

fix compilation error from textureRect

fix Tile image benchmark completing unrealistically fast

check that Linear and Tiled `compositeSampler()` produce the same results

feat: implement utility to render TVG to image

split `image.Linear` into `Linear` and `Slice` types

build.zig: improve check step

add some testing to image (and a bunch of other stuff)

feat: cursor rendering, surfaces