Can't find the way to import my own glTF & textures into the compressor

There must be a way but it has eluded me.

If indeed there is, please make it more obvious. If there isn't, add it.

Start by tracing how the glTF-Compressor currently accepts input, since the issue names no file, test, or entry point. Determine whether importing user-supplied glTF files and textures is already supported; make that workflow obvious or add it, then verify that both a glTF asset and its textures can be compressed.

Written by the indexing model from the issue text.