Add preview images and a script to extract them #10
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Merge from upstream
Bringing up to date with adafruit/Adafruit_CAD_Parts
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Turns out the F3D file format is actually just a ZIP, and each one (at least all that I've seen) contains a handy preview PNG - this seems to be what F360 uses for thumbnails. I wrote a little Python script to extract them. The script will skip over any products that already have manually-supplied preview images, so you can go custom if the automatic preview doesn't look good. See here for more info.
It would be really nice to have some sort of custom F360 plugin that could handle preview images and GIFs, and exporting STEPs, STLs, etc. automatically. I think F360 supports Python for scripting, but I'll have to read up on their API. This should do for now.