[Feature Request] Column + sorting for last update time

[BenjaBobs]

Is your feature request related to a problem? Please describe.
I cannot easily get an overview of what has changed since last I looked at the hub, and the creation date of pr's only gives me new information if there are new pr's.

Describe the solution you'd like
If possibly, I'd love a column that shows the last update time, as well as the ability to sort by it.
That way I can sort by last update time descending, and then I only have to look at the top-x pr's to see what's new.

Describe alternatives you've considered
¯\_(ツ)_/¯
I currently have it sorted by creation date, but it doesn't really solve the problem.

Additional context
Love this project, thansk for developing. 👍