Add rewind client API

[cgillum]

See https://docs.microsoft.com/en-us/azure/azure-functions/durable/durable-functions-instance-management?tabs=csharp#rewind-instances-preview.

Once we have this API, the link documentation should be updated with a sample (some sample code actually already exists but is commented out).

[cgillum]

We unfortunately don't have a good way to test this without Azure Functions because this is currently only implemented for the Azure Storage provider without any common interface to support other storage providers. This API is not yet a GA API and we plan to make changes to it, so I suggest we either do manual testing or do end-to-end testing with the Functions runtime.