Migrate DurableTask.ServiceBus Table and Blob store SDK from WindowsAzure.Storage to Azure.Data.Tables and Azure.Storage.Blobs

[arlynch]

Notable Changes

• The class CloudStorageAccount no longer exists in the new libraries. Therefore, any constructors that leverage it were replaced with new constructors that take an endpoint to the store and a TokenCredentials object
• TableStore entities were able to implement a method that allowed the code to "unpack" complex types to save and load from tables. These methods are no longer available. Instead, a series of public accessors with custom getters and setters are now used to get the same behavior.

Validation

• Running DurableTask.ServiceBus.Tests project: Test runs are green via both the pipeline and running tests against a live storage account

[davidmrdavid]

green run: https://durabletaskframework.visualstudio.com/Durable%20Task%20Framework%20CI/_build/results?buildId=6300&view=ms.vss-test-web.build-test-results-tab