[TASK] Add `createdAt` Field to FriendRequest Object as LocalDateTime

[walidoow]

Issue Summary

The frontend team requires a createdAt timestamp field and "profilePictureURL" for the friendRequest object to calculate the time elapsed since an invitation was sent.

Task Description

• Add a createdAt field to the friendRequest object in the backend. This field should be a LocalDateTime indicating when the friend request was created.
• Add a profilePictureURL to the friendRequest object in the backend. This field should be a string indicating the url of the sender's profile picture.

Current Object Structure

{
    "friendRequestUsername": "string",
    "friendRequestUserId": "string",
    "status": "SENT",
    "requestId": "string"
}

Updated Object Structure

{
    "friendRequestUsername": "string",
    "friendRequestUserId": "string",
    "status": "SENT",
    "requestId": "string",
    "createdAt": "LocalDateTime" // Example: "2023-10-05T14:48:00"
    "profilePictureURL" : "string"
}

Acceptance Criteria

• Add a createdAt field to the friendRequest object as a LocalDateTime.
• Add a profilePictureURL field to the friendRequest object as a string.
• Populate createdAt upon creation of the friend request.
• Populate profilePictureURL upon creation of the friend request.
• Ensure data consistency and backward compatibility.

Notes

• Use the appropriate format for LocalDateTime.
• Coordinate with the frontend team to ensure they can access and use the new field appropriately.