Investigate addition of visual tags to projects (e.g. recently added, trending) #116

See above - if we tag a project in its metadata that its "trending" can we show a nice trending marker on the project when viewing all the projects together?

Can we do something similar for recently added? Can be manual, but would be very nice if we could automate a github action to do this initially and then remove when current date exceeds publication date by 3 months or some arbitrary value.

Scope out what is possible, report back, and then we can see.