SetOptions in Firestore

[BirjuVachhani]

The set method of a document reference doesn't support SetOptions (primarily merge) like it does on client sdks and node admin sdk. Adding support for this would be very beneficial since this is quite often used.

[Turburlar]

I am also waiting for this feature.

[vetemaa]

update method works as well for many use cases. but actual merge is still necessary for some situations.

[ConschiB]

I am also waiting for this. Would be great if this could be implemented :)