Reland: Vulkan: Update checks for promoted extensions This relands commit c2219ef9ec03277b6f8ad18d6d1ade41ddf88ba6. Features that depend on promoted extensions are now enabled when the extensions are present, OR the version of Vulkan that they were promoted to is present. This commit checks for Vulkan 1.1 because that is the version currently supported. In the reland, the promoted extensions are not added to the list of extensions to be enabled, because the underlying driver may not have exposed them as extensions at all. Bug: angleproject:374483183 Change-Id: I98e004d3fb4ed673984859ab63d40702f877b535 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/5955635 Reviewed-by: Jason Macnak <natsu@google.com> Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>