private calendar events that dont leak metadata

[alltheseas]

Is your feature request related to a problem? Please describe.
I don't enjoy relaying on guulagl calendar to see, send, accept, or reject invites.

Describe the solution you'd like
See, create, accept, reject, invite others to private calendar events on nostr that don't leak metadata.

Describe alternatives you've considered
Keep suffering by way of somewhat avoiding guualgl calendar events, which everyone uses, and mixing & matching with memory, email invites that are not up to date, and DMs..

Additional context
You could tailor this service towards a B2B customer, and generate revenue from this service.