[formrecognizer] raise exception when call quota volume exceeded

[kristapratico]

The service will return a Retry-After header that can be up to 3 days and our azure-core retry policy will honor it and wait... this gives the feel of the call hanging forever. We can improve the customer experience by inserting a custom policy that will check for indicators of the quota being exceeded (code, message) and raise an HttpResponseError immediately. Laurent's sample code for example:

So you can do a SansIOHTTPPolicy like:

def on_response(pipeline_response):
   response = pipeline_response.response
   if response.status_code == 403 and "Out of call volume quota for FormRecognizer F0 pricing tier" in response.text():
       raise QuotaReachedError(response.text(), response=response)