Sync personal or team-based Google Calendar

[davidzwa]

Give the option to couple to a user's calendar, and synchronize the events they want.

Settings:

• Filter on event types before the events are synced

Background work:

• Will sync based on a certain time interval or event

Technical implementation

• OIDC flow to gain oAuth2.0 access to the user's calendar for syncing pro-actively
• Alt: (less complex) create a synced calendar with our backend to share with the user (less flexible -, less work for server +, less work for dev +)