Social links: Add option to set target (e.g. _blank) and title attribute (tooltip on hover)

[coliff]

What version of starlight are you using?

0.37.6

What is your idea?

Social links in navbar may have icons which a user doesn't recognize, would be good if they showed the name on hover as a tooltip. Having option to open links in a new tab would be good too.

Why is this feature necessary?

mentioned above

Do you have examples of this feature in other projects?

No response

Participation

• I am willing to submit a pull request for this feature.