vtfpp: add some non-texture images#5

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partyvan wants to merge 3 commits intocraftablescience:mainfrom

partyvan:vtfpp_extra

Commits on Sep 15, 2025

vtfpp: add some non-texture images
partyvan
committed

Commits on Sep 16, 2025

vtfpp: add some programatically-testable vtfs for good measure
partyvan
committed

Commits on Sep 17, 2025

vtfpp: more intricate test patterns
partyvan
committed