Move GrOpsTask to gpu/ops and the the skgpu::v1 namespace

Bug: skia:11837
Change-Id: I9ee6343b5144b02e8f455df0ea01b8199a8f14e1
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/440837
Commit-Queue: Robert Phillips <robertphillips@google.com>
Reviewed-by: Greg Daniel <egdaniel@google.com>
30 files changed