Move the contents of src/gpu/ganesh/v1 up a level

Additionally: rename SurfaceDrawContext_v1.h -> SurfaceDrawContext.h

Change-Id: I8471b709b28268d3b2fa108026df95e861f78e02
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/566884
Commit-Queue: Robert Phillips <robertphillips@google.com>
Reviewed-by: Michael Ludwig <michaelludwig@google.com>
100 files changed