API: Add max_score to /assessment_details

[p5quared]

I have been working on my own Autolab CLI, and have come something annoying. There is no standard grading between courses at my school. With scopes user_courses and user_submit I can see my scores, but am not able to determine how well I did because I can't see max scores for the assessment/problems.

I think that adding max_score to /assessment_details would be convenient. Or even better perhaps adding max_scores dict to /submissions.

[dwang3851]

Thanks for letting us know, we'll take a look into this!

[p5quared]

Awesome! If you decide it is worth merging I am happy to try to implement it myself at some point.