**Add support to batch http requests**

Estimate: __ weeks

The browser has a notion of worker queue that allows around 7-10 requests to be made at any given time. This can severely limit the number of requests that can be made.
A workaround is to BATCH HTTP requests.
Today Azure only supports batching HTTP GET requests. ARM provides a POST API
https://management.azure.com/batch?api-version=2015-11-01 where the user can batch upto 20 GET requests as a payload(request body) and ARM sends a response containing all of them in one response body.

We need to implement a simple debouncer that waits for 100ms or 20 GET requests (whichever happens first) and fires off a batch of calls.
Example: private repo to get an idea.

[RikkiGibson]

The question was raised of whether the 100ms debouncing latency on every GET could negatively affect the user experience overall. It'll be best to start simple on this but it might wind up being worth it down the line to track and check how many requests are currently in-flight before deciding to either debounce or simply send the request through.

Portal may be able to implement this themselves. Let's check and make sure that they got this working before we close this issue.