Use this endpoint to create a new Worksite for an Employer.
Accepts a standard Worksite object with no read-only values specified. If supplied, the
name of the Worksite must be unique to the Employer.
If successful, the endpoint responds with HTTP Status Code
201 Created and a Worksite object with the integer ID of the created Worksite in the response body. It also sets the Location header to the location of the Worksite.
If the specified Employer does not exist, this endpoint will return an error with HTTP Status Code
404 Not Found.