Vulkan: Allow debug labels inside render pass Debug groups and events were previously recorded to the outside-RP command buffer. With this change, they are inserted in the RP command buffer if render pass has started, or outside-RP command buffer otherwise. This creates a more accurate view of groups the application creates. Bug: angleproject:4597 Change-Id: If165bb88e3e66219bad2fe4acc1cc4653c97fb1b Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3204591 Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org> Reviewed-by: Jamie Madill <jmadill@chromium.org> Reviewed-by: Charlie Lao <cclao@google.com> Reviewed-by: Ian Elliott <ianelliott@google.com>