Implement copying between a buffer and a texture 2D array on Vulkan
This patch implements the creation of a 2D array texture and data
copying between a buffer and a layer of a 2D array texture on
Vulkan back-ends.
TEST=dawn_end2end_tests
Resources used to have both a current and an allowed usage but the
concept of current usage has been removed so we can rename "allowed
usage" to "usage" to make the name match WebGPU's
WebGPUBufferDescriptor::usage and WebGPUTextureDescriptor::usage
Change-Id: I5190950bf7f7f5b86c92247ef0240fead9886268