add endpoint to list courses that fulfill a rule #26

Job	Run time
Backend Check / Django Check	1m 56s
publish-landing / Docker Publish	13s
Frontend Check (plan) / React Check	1m 16s
Frontend Check (alert) / React Check	1m 16s
Frontend Check (review) / React Check	1m 22s
publish-frontend	0s
publish-backend	0s
Deploy	0s
	6m 3s

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