Is your feature request related to a problem? Please describe.
I would like to keep my college timetable and other appointments in Anytype. However,
- I’m quite forgetful and require notifications (addressed in <https://community.anytype.io/t/-/1024>).
- Anytype doesn’t have the facilities that a proper calendar app might have.
For the second one, I’m very excited that Anytype will support databases with (i) people and (ii) date relations. However, these will not be as useful as they could be if they are sequestered in the Anytype app.
Describe the solution you’d like
As part of this feature, objects in Anytype sets would show up in the phone’s contact list or calendar, as appropriate.
A user could choose various sets to show up as calendars or contact groups, and possibly the mapping between relations and vcard/icalendar properties.
Possibly, the user could even edit the sets using a contacts or calendar app.
Additional context
The best example of a sync provider is probably [DAVx5](https://www.davx5.com/), which syncs with a CalDAV/CardDAV server (I’ve tried hosting one and it works, but Anytype is far more accessible and doesn’t require maintenance)
