Implement controller and backend logic for isApproved feature

[Tasnim1147]

Description: This PR implements a feature that allows users to approve or disapprove posts using a toggle button. The changes ensure that the UI reflects the current approval state immediately after an action is taken, without needing to reload the page.

Changes Made:

• AJAX Call Implementation:

Added an AJAX call to handle the approval status of posts via a PUT request to the API endpoint /api/v3/posts/:pid/approve.
The request includes the post ID, current approval status, and CSRF token for security.

• Dynamic UI Updates:

Implemented logic to update the button icon and text based on the approval state returned from the server.
The toggle button's icon will switch between fa-toggle-on and fa-toggle-off, and the accompanying text will change between "Approve Post" and "Disapprove Post".

• Event Listener Setup:

The click event listener is set up to handle clicks on the toggle button, ensuring that the correct post ID is targeted for approval changes.
Used jQuery to manage DOM interactions, ensuring clean and readable code.

• Console Logging for Debugging:

Added console logging to track the approval process and response data for easier debugging.

• Error Handling:

Included error handling to notify users of issues that may arise during the approval process.

[jdufitum]

The code looks good to me. we need to fix the bug which is causing the test fail

[jdufitum]

LGTM