Render list of all included icons
It would be really nice to have a JSON file that contains all ids of icons that are rendered into the build artefacts. This could be used to feed it into auto-completion for various applications.

One example: CodiMD (See https://github.com/hackmdio/codimd/pull/1003#issuecomment-428675609)

Probably also applications like Atom or similar could use such a list. Should be trivial since it seems to be there already in similar form: https://github.com/ForkAwesome/Fork-Awesome/blob/next-release/src/icons/.fontcustom-manifest.json

I'm not sure about people who extend forkawesome with custom fonts, if they are also automatically represented in there, so may worth considering. Apart from that, it would also be awesome to then include this list into the packages, since it's better to get the list along with the real build artifacts instead of may get the fonts from a CDN but the list will be taken from a local package.