Add all the Nerd Font Glyphs

[iFreilicht]

First off, absolutely love this little tool! I've gotten so used to the Win+. on windows, this is not just a good, but an improved replacement!

Now, there are a lot more things that one could search through with this, and especially useful would be the nerd font glyphs.

The database with all the names already exists, it "only" has to be brought into the tsv format to be available in splatmoji:
https://github.com/ryanoasis/nerd-fonts/blob/gh-pages/_posts/2017-01-04-icon-cheat-sheet.md

That should be enough to generate a tsv file. I'm willing to implement this, shouldn't be more than an hour or so in python, just wanted to get some input first in case you have any :)

[iFreilicht]

Alright, pull request is in, mostly works as expected. There's an issue with some mdi glyphs that causes them to be printed right-to-left:

This could be an issue with my personal setup though.