Support multi-master write Cosmos DBs

[sebader]

First question: is this repo still maintained? :)

If so, it should support multi-master geo-replicated Cosmos DB similar to what other language SDKs offer https://docs.microsoft.com/en-us/azure/cosmos-db/how-to-multi-master?tabs=api-async

[sebader]

@a8m trying to tag you directly :)

[a8m]

Hey @sebader and thanks for tagging me. I missed this issue.

Regarding your question - I created this repository 6 years ago when there was no alternative for using DocumentDB (nowadays CosmosDB) in Go, and since then, additional contributors (11) helped me to maintain this package and added more features to it.

I don't have the capacity to implement the requested functionality, but I can help with the review. So, if you want to implement it, and have the time for it, go ahead and assign me or other contributors as reviewers.