This encapsulates several colliding states into grouped scopes.
It also improves serialization of several of the resources by
including the resource ID in the serialization key. Also other
minor improvements.

This change should improve detection of state mis-management.

Bug: angleproject:5133
Change-Id: I6ee5c02bb3ba70e91a595db2408076b15e4a9e67
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3003384Reviewed-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Gert Wollny <gert.wollny@collabora.com>
Commit-Queue: Jamie Madill <jmadill@chromium.org>