[$75] Allow setting "status" during records creating

[maxceem]

At the moment when we are creating Jobs, JobCandidates and ResourceBookings we do not allow setting status field and just hardcode the value.

• We should allow setting status during POST request of all objects: Jobs, JobCandidates and ResourceBookings.
• This field should be optional, with the default the same like we set now.
• Update Swagger.
• Make sure, that automatic updates that depend on the status work when we are creating objects. Previously we didn't take care of it because we always created objects with the same status. I think we only have to fix it for ResourceBookings https://github.com/topcoder-platform/taas-apis/blob/dev/src/eventHandlers/ResourceBookingEventHandler.js#L134-L137

[maxceem]

Challenge https://www.topcoder.com/challenges/ef2a9d84-27ff-476c-b571-80a7358b2990 has been created for this ticket.

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[maxceem]

@imcaizheng this is ready for pickup.

[maxceem]

Challenge https://www.topcoder.com/challenges/ef2a9d84-27ff-476c-b571-80a7358b2990 has been assigned to aaron2017.

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[imcaizheng]

PR created #117

[maxceem]

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