[graphite] Set up VK_KHR_dynamic_rendering extension

Bug: b/237107064
Change-Id: I1957e6ea7639d75926857eb6989670c32454c2d4
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/702838
Reviewed-by: Nicolette Prevost <nicolettep@google.com>
Commit-Queue: Nicolette Prevost <nicolettep@google.com>
Auto-Submit: Jim Van Verth <jvanverth@google.com>
3 files changed