Move components and other features from the lab namespace to solara for 2.0

[maartenbreddels]

I think for solara 2.0 we should move the following out of the lab namespace:

• tasks (and I think use_task should have dependencies=None as default argument to behave more like a regular task)
• ConfirmationDialog

Lets also review these:

• Tabs
• Menu
• InputDate
• Chat*

I hate to just move them to solara, and find out we still have a bad API.

[iisakkirotko]

I think the APIs of the Menu and Chat components have been pretty stable and they could be moved out of lab. I don't remember if there have been any recent / planned changes to Tabs. I think InputDate could remain in lab for another iteration, since there is still some open discussion about what should be exposed in the API (like #818 and #653).