Please add support for Azure Event Hub

**Is your feature request related to a problem? Please describe.**
My company would like to use Azure Event Hub to collect system logs so they can be processed by Elastic Search and Databricks pipeline.

**Describe the solution you'd like**
Simple output plugin for Azure Event Hub.

**Describe alternatives you've considered**
I consider writing my own c plugin using https://github.com/Azure/azure-event-hubs-c.

**Additional context**
My company uses AKS and Azure Analytics is not the best tool for logging management.