Feature Request: Calendar Planner Feature (like calendly)

### Description of the issue
Just like https://calendly.com/ but in huly.

Other solutions:
https://zcal.co/
https://cal.com/de

### Possible solutions
When huly is connected to a calendar it would be nice to have the functionality of https://calendly.com/ built in.
It would need the possibility to have guests in the workspace as meetings would be nice to be on huly itself and not Google Meet or Zoom.