Previous serial mechanism wasn't reliable. QueryHelper is now a
vk::Resource and uses the vk::Resource lifecycle.
Also added some utility methods to QueryVk to deal with stashed queries.
Any question we want to ask about mQueryHelper we want to ask about the
stashed queries as well.

Bug: b/169055809
Bug: b/169788986
Bug: b/170312581
Change-Id: Ia34a7a433e61a2543cfb09491ebab55b054a26c9
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2537718Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
Reviewed-by: Tim Van Patten <timvp@google.com>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Commit-Queue: Courtney Goeltzenleuchter <courtneygo@google.com>