Nomad CLI Monitor Dispatched Jobs

### Proposal

Since the Nomad CLI supports monitoring deployments with `nomad job run`, it would be great to see similar behavior with `nomad job dispatch`.

Ideally it would dispatch the job and poll the dispatched job while it is running, and then exit 0/non-zero based on the exit status of the job (maybe some consideration with idempotency tokens needed).

### Use-cases

Use case is mostly around a CI environment where we use dispatched jobs to prepare an environment, seed a database, etc.

Being able to shell out to the Nomad CLI rather than custom scripting with the Nomad API would be great.

### Attempted Solutions

Current solution is pretty clunky, unless there's a better way to do it.

- Dispatch a parameterized job
- Get the dispatched job ID from the previous command
- Poll the Nomad API until the dispatched job is dead
- Check the latest alloc of the dispatched job to see if it completed successfully or failed.
- `/v1/job/` will only say "dead" without indication of success/failure. Gets a bit tricky when the dispatched job has rescheduling, lost nodes, etc. so logic gets a little dicey.