[RFC] switch fontawesome to git submodule

[vapier]

Not sure how you feel about gitsubmodules, but it makes it easier to update.

[vapier]

if you'd rather not use gitsubmodules, i totally understand. on a related note, the current fonts are outdated :).

[open-dynaMIX]

Sorry for the accidental close/reopen.

Thanks for the PR :tada:. I'm also not sure how I feel about submodules, never used them a lot :). But I guess it's the way to go.

Could you please also extend the README in regard to this change? And the checkout action might need a submodules: 'true'.

[open-dynaMIX]

@vapier I'd like to bring this PR into master. Are you gonna continue working on it, or should I finish it?

[vapier]

i prob won't get back to this anytime soon as i'm not currently using mpv :)

feel free to finish it up or just close

[open-dynaMIX]

Alright, thanks for letting me know!