feat: add support for course permission in authz rest api (#274) #833

Job	Run time
tests (ubuntu-latest, 3.12, quality)	56s
tests (ubuntu-latest, 3.12, docs)	55s
tests (ubuntu-latest, 3.12, pii_check)	30s
tests (ubuntu-latest, 3.12, django52)	1m 59s
	4m 20s

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