Made 'Sample' come first again and thereby made it easier to use for
quick experiments and smoke testing.

Bug: b/156739423
Change-Id: Ic821aba66afbac97556b072750e24747af1010de
Reviewed-on: https://swiftshader-review.googlesource.com/c/SwiftShader/+/45208
Presubmit-Ready: Nicolas Capens <nicolascapens@google.com>
Tested-by: Nicolas Capens <nicolascapens@google.com>
Reviewed-by: Antonio Maiorano <amaiorano@google.com>
Kokoro-Result: kokoro <noreply+kokoro@google.com>