Add support for cosmos data

Also for sets of streams. E.g. if I have streams created for each day I want to pull in the last X streams based on a stream name pattern that pivots on date.

Please make Microsoft system connects to Microsoft system!

How we can use COSMOS as a source in power BI desktop?

There's a connector (still beta): https://docs.microsoft.com/en-us/azure/cosmos-db/powerbi-visualize

Atleast you should add cosmos streams which is Microsoft internal system