Task - RBAC AuthZ - Implement user assignments endpoint for Admin Console

[rodmgwgu]

Related Discovery: https://openedx.atlassian.net/wiki/spaces/OEPM/pages/6060310529/Spike+-+M2+-+Endpoints+for+new+Admin+Console+designs

Implement the user assignments endpoint to be used in the expanded user view or the user Audit view.

Spec:

GET /api/authz/v1/users/(user_id)/assignments/

• Query params:
  • page_size: For pagination
  • page: For pagination
  • orgs: Comma separated list of orgs to filter by
  • roles: Comma separated list of roles to filter by
  • sort_by: role, org or scope
• Needs to filter to only relevant assignments to orgs or scopes (courses or libraries) that the calling user has view access to

TODO: Specify response fields, derive from Figma design.