Vulkan: Add pending memory size for VMA images * Added implementation for vma::FindMemoryTypeIndexForImageInfo(). * Add pending memory allocation tracking for VMA images using the memory requirement from getMemoryRequirements() and the memory type index from the function above. Bug: b/218891184 Change-Id: I1c3d3a8f5f36eb57bd7a5a059aa3bf713b819831 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/4428535 Commit-Queue: Amirali Abdolrashidi <abdolrashidi@google.com> Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org> Reviewed-by: Charlie Lao <cclao@google.com>