Support muting specific calendars

[eiclu]

Is your feature request related to a problem? Please describe.

Users in our organization often have multiple calendars:

• Some personal
• Some for small groups/teams
• Some which are available to all users in our organization

Because of the character of the global calendars (e.g. Meeting Room bookings) they might want to not receive notifications for all new events added to those calendars - but when disabling notifications for calendar events they won't receive notifications for the other calendars (e.g. Team Schedule).

Describe the solution you'd like

I would propose adding a "Mute Calendar" feature, to each calendar:

This should be possible to enable per user, but also as a default by the owner of the calendar:

Describe alternatives you've considered

Muting all calendars is what we do right now. But this leads to people to be unable to use the useful feature of activity notifications

Additional context

No response