feature: adding support for AsyncInferenceConfig in endpoint config

[Luca-Ferrera]

The EndpointConfig constructor could be extended to support passing in AsyncInferenceConfig
which includes configuration as shown here in the doc API_AsyncInferenceConfig
In this way would be possible to create an EndpountConfig supporting Asynchronous Inference.

[ca-nguyen]

Hi @Luca-Ferrera,
I can see this being used by many of our customers - this will be a great feature to add to the Data Science SDK.
Thank you for bringing this to our attention.