This adds support for the new Mastodon 4.2 role badges. Admins can
define if a role should be visible in the interface and then we get it
delivered by the Api on the `Account` object like this:
```
"roles": [
{
"id": "4",
"name": "TEST",
"color": "#ffee00"
}
]
```
- keeps compatibility with older Mastodon version and non Mastodon
servers
- Took me a while, but I figured out a way to use the color and have it
look ok on all backgrounds (Mastodon itself ignores the color and just
always uses its brand color)
- falls back to Tusky blue in case no color is configured
- I adjusted the "Follows you" and "Bot" badges so they match the new
badge style
- In case the "Follows you" and "Bot" badges are visible at the same
time, "Follows you" gets its own line and "Bot" goes into the same line
as the role badge.
- Will work even with a lot of role badges (right now users can only
have 1 role at once though)
- Will work even when the badges federate (right now they don't)
<img
src="https://github.com/tuskyapp/Tusky/assets/10157047/24cbe889-ae46-408e-bfa0-cf3fd3c24f74"
width="320" />
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