Allow "add to Google Calendar"?

[hawkrives]

Especially on Android, I'm pretty sure that most people don't use the stock Calendar app.

We should … allow people to add it directly to the Google Calendar app.

[rye]

More importantly, the feature as-is adds to whatever calendar it pleases (which I think is the first one it finds) so I have events on my "Birthdays" calendar that I can't delete because they're there. It'd be nice to make this integration better.

[drewvolz]

Something I’ve wanted as a UI was for the calendar event to populate a form that could be tweaked and customized before adding. I’d be in favor of looking at something like this https://github.com/vonovak/react-native-add-calendar-event