Auto assign shifts API release

Introducing a brand new endpoint under the job scheduling section: Auto assign shifts. The ability to send auto assign shifts request and get information about the request status.

New Endpoints Added:

Create auto-assign request: Initiate a request to auto-assign shifts by their IDs. If multiple IDs are provided, all corresponding shifts must occur within the same work week (e.g., Monday to Sunday). This endpoint only submits the request; processing may take a few minutes. The auto-assignment considers user preferences to work, unavailability, and approved time off. For assignment status, refer to the auto-assign status endpoint.

Get auto-assign status: Retrieve the status of an auto-assign request using its unique request ID. The response categorizes the results into 'scheduled shifts' for successfully assigned shifts and 'unscheduled shifts' for those where auto-assignment was not successful.