Cache cleanup

[marwie]

Hey,

I just noticed that the gltf-transform temp directory has grown to 1.2 GB by now and I wonder if files could automatically be removed or cleaned up after a run since - if I remember correctly - they're not used anymore later (e.g. as a cache)

[donmccurdy]

Yikes. Cleanup was intended to happen...

glTF-Transform/packages/cli/src/transforms/toktx.ts

Line 30 in 46a7405

tmp.setGracefulCleanup();

... but it looks like I may not be using that feature of tmp correctly. I'll retag this as a bug.

[donmccurdy]

I also really want to avoid using CLI-in-CLI like this, per #675, but no progress there.