Feature request: display the last time a list was updated

[SHRMP0]

Is your feature request related to a problem? Please describe.

It's hard to keep track of which lists and moderation lists are still being maintained on Bluesky.

Describe the solution you'd like

Displaying the last time a list or moderation list was updated is a great resource to understand if it's being kept up to date by its owner or if it could be possibly outdated and not suitable for use anymore, for example.