feat: upgrading simple api to drf compatible ( 3rd api ) list_email_content

[awais786]

Issue: #35112

existing API Code

Updating api code using DRF.

1. Added standard authentication_classes
2. Added permission_classes

Steps to verify on local tutor instance:
1: Open admin panel and laod this page and enable both checkboxes and save.
2: Open this page and enter course id and enabled email.
3. Open instructor dashboard.
4. email tab is visible and click on that and further click new experience.
5. Send an email email now.
6. Click on Email Task History now it will hit the related API.

Steps to verify via postman.

1. Pass the URL in postman.
2. Pass required csrf token and access token.

expected result

{
    "emails": [
        {
            "created": "2024-07-31T07:20:30.293Z",
            "sent_to": [
                "Myself"
            ],
            "requester": "admin",
            "email": {
                "subject": "awa",
                "html_message": "<p>aaaa</p>",
                "id": "2"
            },
            "number_sent": "1 sent"
        },
        {
            "created": "2024-07-31T07:17:50.419Z",
            "sent_to": [
                "Myself",
                "All students"
            ],
            "requester": "admin",
            "email": {
                "subject": "awais",
                "html_message": "<p>THis is not a <strong>ways</strong></p>",
                "id": "1"
            },
            "number_sent": "2 sent"
        }
    ]
}

[UsamaSadiq]

Looks good to be merged.

[awais786]

@feanil Please review.

[feanil]

Looks great and I tested that the API works.

[feanil]

It's confusing that this is a POST request in the first place given that it is not sending any data in the POST body and not making any modifications. But that change was made in #12719 for reasons that are unclear to us now so we'll leave it as is for now and we can re-visit if/when we want to revamp the instructor APIs further.

This will at-least make these APIs all visible in our openapi spec and make the APIs usable by other token types than just session.

(Not something you need to do anything about, just leaving a not for future investigators.)

[edx-pipeline-bot]

2U Release Notice: This PR has been deployed to the edX staging environment in preparation for a release to production.

[edx-pipeline-bot]

2U Release Notice: This PR has been deployed to the edX production environment.

[edx-pipeline-bot]

2U Release Notice: This PR has been deployed to the edX production environment.