Support CalDAV tasks

[PanderMusubi]

Checklist

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Feature description

Support syncing the notes as CalDAV tasks.

Why do you want this feature?

Notes can be used in sync on mutiple devices.

Additional information

See also https://f-droid.org/en/packages/org.tasks/

[Albirew]

I agree. ideally, it would allow for notes and tasks sync with home cloud solutions like nextcloud. Tasks-org is a gas factory and opentasks is not maintained since 2021

[PanderMusubi]

With DAVx⁵ also possible to connect e.g. with DAViCal and more.

[daffydock]

Agreed. Using DAVx5 should be a far easier implementation that could cover a number of services, including Nextcloud and others.