While e.g. "CmdImageToImageCopy" was slightly more explicit, it can
leave one searching for the vkCmdImageToImageCopy API call.

Bug: b/134584057
Change-Id: I32d60e1389ec60c65496c35b9ac1d74a0e844c6f
Reviewed-on: https://swiftshader-review.googlesource.com/c/SwiftShader/+/46349
Presubmit-Ready: Nicolas Capens <nicolascapens@google.com>
Kokoro-Result: kokoro <noreply+kokoro@google.com>
Tested-by: Nicolas Capens <nicolascapens@google.com>
Reviewed-by: Alexis Hétu <sugoi@google.com>