Refactor Vulkan image, texture, RTs so that create and getter handles match.

Refactor Vulkan image, texture, RTs so that create and getter handles match.

This allows allows us to track and notify clients when either side changes
and image layout.

BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1974983002

Review-Url: https://codereview.chromium.org/1974983002