Add SkImage::MakeRasterFromCompressed and make MakeFromCompressed fall back to decompression for unsupported compression types

This is intended to make using compressed textures easier since developers can just provided compressed data and it will be uploaded to the GPU in some way, shape or form.

Change-Id: Ieed008f083d6e3594eaa9a02bc5348e00ee60d2a
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/265601
Reviewed-by: Mike Reed <reed@google.com>
Reviewed-by: Brian Salomon <bsalomon@google.com>
Reviewed-by: Greg Daniel <egdaniel@google.com>
Commit-Queue: Robert Phillips <robertphillips@google.com>
21 files changed