Option to display instance with username

[DCarlson12]

Users should have an option to display other users’ instance along side their screen names.

This could be simply adding the @instance tag or via a flair kind of tag from Apollo, or even color coding/icons.

Text examples

• [email protected]
• [email protected]

Flair examples

• username lemmy.world
• username lemmy.ml

[rsammelson]

I am working on this together with #161.