Allow font selection for profile icons

[vanoreo]

Allow font selection for profile icons

As it stands right now, profile icons can either be a valid image file or a valid Unicode character (typically Emoji). I was playing around with alternatives, and it looks like that any character in the Segoe font family will play nice, even if updated on a Windows 10 machine to Segoe Fluent. I think that adding the ability to select an arbitrary font for text-based icons would open some doors for people who would prefer to use something like Material or Nerd Fonts for a consistent style and wider range of available icons. It would also have the benefit of scaling on screens better than your average PNG.

Here is a slapdash mockup of what I am describing:

[carlos-zamora]

Ok. This is cool. I'm sold haha. UI could probably use some work, but the JSON could be pretty straightforward and look something like this:

"icon":
{
   "text": "\xf871",
   "font": "My Nerd Font"
}

For the UI, I'd expect something like a dropdown/toggle button/checkbox that lets you choose "advanced". When enabled, you get to pick a font. That way we can abstract this more complicated stuff away from some users.

[carlos-zamora]

For the record, I think something like this wouldn't be too difficult to implement. So I'm also adding the Help-wanted tag for it.