feat: add authz permission checks for course grading configuration endpoints

[rodmgwgu]

Description

Implement new AuthZ permission checks over endpoints related with course grading configurations in course authoring.

The new AuthZ permission checks only apply when the enable_authz_course_authoring feature flag is enabled for the specific course, or globally, otherwise existing behavior persist.

The following AuthZ permission is being used:

• courses.view_grading_settings
• course.edit_grading_settings

The following endpoints were updated:

• GET /api/contentstore/v1/course_grading/(courseid)/: Get course grading data
• POST /api/contentstore/v1/course_grading/(courseid)/: Update course grading
• POST /api/contentstore/v0/grading/(courseid)/: Update course grading

Supporting information

openedx/openedx-authz#196

Testing

Verified that:

• Authorized users can access the endpoints.
• Unauthorized users receive a 403 response.
• Legacy permission fallback works as expected.

Running relevant tests manually:

On a cms container (run with tutor dev exec cms bash), do:

pytest -p no:randomly --ds=cms.envs.test cms/djangoapps/contentstore/rest_api/v1/views/tests/test_grading.py

pytest -p no:randomly --ds=cms.envs.test cms/djangoapps/contentstore/rest_api/v0/tests/test_authoring_grading.py

Deadline

Verawood

[openedx-webhooks]

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