Allow adding titles to links.

[RokeJulianLockhart]

If you look at https://linksta.cc/studio/links, you'll see that each entry has a title which has typographic predominance over its hyperlink. This is not true for https://app.dub.co/links, which makes quickly identifying the purpose of each link difficult.

How am I to know what directs where? (Ignore the Google one.)

This is strange, considering that its uses the correct typographic hierarchy - it merely provides predominance to the link identifier. I consequently propose that we add a field for a link title. This is intended solely as an aid to the link manager - I don't care whether the link follower ever sees this, even in link previews.

In order to necessarily modify the GUI to accommodate this modification, I propose that https://app.dub.co/links adopt (or at least add) a table style, which I have tracked separately at https://github.com/steven-tey/dub/issues/485#issue-2021790145:

This is because as the attribute presentation becomes more complex, keeping the GUI understandable shall become difficult to the extent that it may stifle improvements.