add ability to view / add / edit conference details (e.g. edit Google Meet / Microsoft Teams connect information)

[donalhunt]

With a huge amount of people working from home due to COVID-19, the ability to amend Google calendar entries with conference details would be extremely helpful (companies / individuals are using everything from Google Meet to Microsoft Teams to Skype to Twitch / Facebook).

Google's backends (and API) support any conference solution (but the frontends don't).

See https://developers.google.com/calendar/v3/reference/events for the data structures and details of how to add "conference" related data (specifically the fields related to conferenceData, conferenceSolution and conferenceId).

Happy to attempt a PR if someone can provide some pointers on how best to implement this in the current code base...

[michaelmhoffman]

I added issue #533 which duplicates the view part of this, and has a suggestion of how to do that part of it. Viewing probably an easier start point.