[desktop] [photos] Add a timeline

[dnred]

Add a timeline view on the side of the web/desktop app just like Immich and the Ente mobile app.

[iedame]

I definitely miss this feature and believe it would significantly enhance the experience on Ente Photos.

[honhatduy]

Looks like they improved this in the latest #6688 .

[vishnukvmd]

This change is unfortunately for mobile, we'll follow up with desktop :)

[tarpan]

Yes, it definitely makes it easier to find photos from specific period, which I think is a basic, but still missing, feature.