[Feature Request] Add support for rel=me link attribute in bookmarks

[spencerhughes]

I would like to verify that I own my domain using the Mastodon account verification process. I can add a link to my profile into the bookmarks section of the dashboard, but there is no way to override the default rel=noreferrer tag added to links in the bookmark section with the required rel=me attribute. It would be lovely if it were possible to set that attribute manually, or if Flame automatically detected a list of social media URLs and changed the rel attribute automatically.