Clone, pull, and get status of a specific student on an assignment

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

I want to clone and pull for a specific user, not just a (effectively random) set of students per "page" of an assignment.

**Describe the solution you'd like**
A single CLI command that could print the status or, clone, or pull the submission for a specific student on an assignment.

**Describe alternatives you've considered**
Use the bulk commands and prune to what I need, or use the webapp to find the student in question.

**Additional context**
I am looking to wrap the CLI tool here into a more featureful CLI for my own specific needs and the more CLI arg nuances I can get the better :grin:. Machine readable output like JSON would be great too in this case.

El issue menciona los comandos bulk existentes para clone, pull y status, pero no indica archivos ni pruebas. Empieza por localizar esos puntos de entrada de la CLI y determinar cómo se identifica a un estudiante; se considera terminado cuando un comando puede dirigirse a ese estudiante para status, clone o pull sin depender de las páginas de assignment, teniendo en cuenta la salida legible por máquina solicitada.

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