update api certificate_invalidation_view to DRF

[awais786]

Steps to test via Postman.

1. pass this URL in postman as post request.
   form-data: user = student id ( compulsory )
   : notes = your notes ( this is optional param

expected result:

{
    "id": 4,
    "user": "admin",
    "invalidated_by": "admin",
    "created": "September 24, 2024",
    "notes": "testing notes"
}

2. Now try delete method.
   send data as raw->json.

Steps to verify.

1. Generate a certificate for a student enrolled in the course. ( or add a cert in this table directly admin/certificates/generatedcertificate/)
2. Enable the "Certificates" tab on the Instructor Dashboard.
3. Navigate to the following link (replace with your course ID). ( instructor dashboard and certificates tab )
4. Under the "Invalidate Certificates" section, enter the student's ID and a comment. Upon successful invalidation, the entry will be added to the invalidation table, and a button to remove the entry will appear.

---

On success it will show the removal button.

6. Press the remove button it will remove the entry from table.