[problem_types/match] Support silent feedback for match problems

[anthonygego]

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

MCQ problems allows to hide feedback in case of errors such that only the general task feedback indicates there are errors in the submission.

Match problem types does not allow such a feature and the student always know if the sub-problem is correct or wrong.

Describe the solution you'd like

It would be useful not to show specific feedback for match problems. This implies addition of a config field in the match problem and filtering feedback based on that config fields in the check_answer method.