core:image
```odin import "core:image" import "core:image/png" ... img, err := image.load_from_file("path.png") ```
Also add QOI to CI test suite by roundtripping 8-bit RGB(A) through QOI and checking the hashes match.
Additionally: - Firm up PNG loader with some additional checks. - Add helper functions to `core:image` to expand grayscale to RGB(A), and so on. TODO: Possibly replace PNG's post-processing steps with calls to the new helper functions.