scePngEncQueryMemorySize, scePngEncCreate, scePngEncEncode and
scePngEncDelete encode R8G8B8A8 and B8G8R8A8 images with a pitch into
RGB or RGBA PNGs using the shared encoder in core/Decoder/Png.
Decoder::Png::Encode takes optional compression level and filter
options so the encode parameters are honoured.
Co-Authored-By: Claude <noreply@anthropic.com>