Workflow - JS SDK support

[rabollin]

Describe the proposal

This work item is to add the Workflow support in JS SDK.

1. Implement Durable Task JS-SDK
2. Implement DAPR Workflow client - Implement wrapper for all entities of DTF
3. Implement Workflow Authoring API
4. Error handling and exceptions to be correctly captured
5. Workflow retry policies (see here and here). This is already supported with Python & .NET. To have a language parity, this should be implemented for JS-SDK too.

IMPORTANT: As part of fixing this, we should also update the patterns documentation here.

[kaibocai]

Hi @rabollin , can you elaborate more on Implement Workflow Authoring API, do you have any code/doc link for helping understand this work item? Thanks.

[kaibocai]

Should we close this one, as there is another one open for this #463 already?
Combining them allow easier tracking.

[JoshVanL]

Closed in #563