Add 'insert link' to message formatting bar

[nadonomy]

Suggestion: I frequently want to insert links in messages, but there's no option to do this in the formatting actions. The simplest solution would wrap whatever is higlighted in markdown syntax to link, with the caret then placed to paste the link address. However, we should also consider the button triggering a modal for input, where the caret is then placed after the inserted link.

[nesnera]

Inserting a link is implemented by almost all editorsI know. Could it be added? 🙏

[SethFalco]

Going to just copy some information over from my closed issue!
I'd love to see this get its own dedicated shortcut as well.

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In my opinion, GitHub offers the best UX for this.

Normally CTRL + K would be used for adding a URL, but IMs usually use this for finding chat rooms instead.

Key combination	Microsoft Windows/KDE/GNOME
CTRL + K	Insert hyperlink (word processing)

— https://en.wikipedia.org/wiki/Control_key#Table_of_examples

The following applications utilize CTRL + K for this purpose already:

• Thunderbird
• LibreOffice
• Nextcloud
• GitLab
• GitHub
• Google Docs

The next thought would probably be CTRL + SHIFT + K, it's worth noting browsers use this to open the dev tools console, so that might bother developers/debuggers, though.

Ideally, it should be something similar to CTRL + K so it feels more consistent with other software. ^-^'