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Support workflow ID reuse policy #493

@kaibocai

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@kaibocai

Is your feature request related to a problem? Please describe.

durabletask-go now support orchestration ID reuse policy, customer can reuse the orchestration ID with three different action ERROR, IGNORE, and TERMINATE with a target runtime status set.

ERROR- If there is an existing workflow then the scheduler throws an exception (this is the current behavior).
IGNORE- If there is an existing workflow already scheduled, then the scheduler does nothing.
TERMINATE- Terminates any existing workflows with the same instance ID and then schedules a new instance as one atomic action, similar to on-demand ContinueAsNew.

SDK needs to expose those options to customer orchestration ID reuse support.

Reference:

  1. Support reusing orchestration id microsoft/durabletask-go#46
  2. Support orchestration id reuse policy microsoft/durabletask-java#188

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