specifica API

• Assigned courses list
• Assigned course details (like /courses/{courseId}, add enrolled students count)
• Course news list (like /courses/{courseId}/notices)
• Create/update/delete news
• Course files (like /courses/{courseId}/files and /courses/{courseId}/files/{fileId})
• Lessons
  - Virtual classrooms (like /courses/{courseId}/virtual-classrooms)
  - Lesson register
• Assignments (adapt for teacher/student usage: /courses/{courseId}/assignments)
• Collaborators list (like /courses/{courseId}/assignments)
• Create/update/delete collaborator
• Course guide (like /courses/{courseId}/guide)