Add extended tooltip for project links

Problem to solve

Discovering a new repository in GitLab has always been difficult when the user is presented with little information about it before the user clicks upon the selected repository's link.

Further details

(Include use cases, benefits, and/or goals)

Similar to how there's a profile summary when one hovers over a user's profile picture or name, there should be a repository summary that contains the following information:

• Dominant programming language used for that repository.
• Number of favorites
• Number of forks
• Time of last accepted merge request/commit
• Repository name
• Owner's name (Group or User)

Proposal

When hovering over a repository within a list of repositories, it'd be nice if there's a tooltip that provides summaries.