Add SkSL2Pipeline fuzzer

Bug: skia:8876
Change-Id: Ib62da438dec493536c7351eb0c4a06a0275833b4
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/201645
Commit-Queue: Kevin Lubick <kjlubick@google.com>
Reviewed-by: Ethan Nicholas <ethannicholas@google.com>
3 files changed