This allows views to track a different lifetime than vk::ImageHelper.
This in turn will fix the race condition on ContextVk destruction when
releasing ImageViews owned by TextureVk and RenderbufferVk. For now
this is a refactoring change only.

Bug: angleproject:2464
Change-Id: I9581975bd5d4913233bbed8439dd4a632cc78a2a
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1843231
Commit-Queue: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Ian Elliott <ianelliott@google.com>