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.

La issue nomina i comandi bulk esistenti per clone, pull e status, ma non indica file né test. Inizia individuando questi punti di ingresso della CLI e determinando come viene identificato uno studente; il lavoro è considerato completato quando un comando può indirizzare quello studente per status, clone o pull senza dipendere dalle pagine di assignment, tenendo conto dell’output leggibile dalle macchine richiesto.

Scritto dal modello di indicizzazione a partire dal testo della issue.