Add favorite tab or bookmark

[hugo-syn]

Is your feature request related to a problem? Please describe.
I'm always frustrated when I have a big DB and I need to find that particular website that caught my attention.

Describe the solution you'd like
A new tab with all the bookmarked screens / favorite tab and an option to mark a screenshot as favorite / bookmarked.

Describe alternatives you've considered
None ?

Thanks for this great tool :)