I'm on mobile now so I can't type out a complete solution, but I think that
what you're looking for is in this file:
https://github.com/gucci-on-fleek/unnamed-emoji/blob/master/documentation/unemoji-manual.mkxl
It doesn't exactly do what you specifically asked for, but I think that it's
pretty similar to your end goal. There's a .tex file with example usage in the
same folder and a link to the compiled PDF from the main repo page.
Thanks,
-- Max
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