[API] What are the status available through the API in order to identify the progression of the candidate in the proctoring experience?

To know the status of the candidate, the request should be GET /exams/id/show_student 

Status returned can be as follow (the one in bold signalling that the candidate is under monitoring):

• :registered
• :before_check_req_mail
• :email_bounced
• :email_sent
• :after_check_req_mail
• :before_check_req 
• :after_check_req
• :in_setup 
• :exam_not_started 
• :exam_started 
• :exam_finished