[CAL-4943] If all information for "confirm" step is provided skip step

[CarinaWolli]

If all information needed for the booking is prefilled from incoming URL params we want to skip the booking page with the confirm button.

Clicking on the timeslot should immediately book the slot and redirect to the booking success page. We should also add Terms and Privacy Policy:

_{From SyncLinear.com | CAL-4943}

[abhi9dev]

@CarinaWolli what if the user clicks the time slot by mistake, it will book a wrong slot, so I think having a confirm button before booking slot is okay.

or is it like the time slot is also included in the query params of URL ?

[CarinaWolli]

@abhi9dev No, slot time doesn't need to be in the query params of the URL. We want to do this to speed up the booking process

cc @PeerRich