[FEAT] Add Support for Management Portal Client

[this-Aditya]

Support for a Management Portal client can be added to enhance functionality. This will be particularly useful for handling requests that lack subject or project information, as such details can be retrieved using the Management Portal client.

There are two potential approaches to implement this:

1. Extend the existing class designed for this purpose: ManagementPortalService.java

2. Utilize the ManagementPortal client library. This Kotlin library interacts with the ManagementPortal REST API and provides support for fetching various ManagementPortal resources.
   For more details, refer to the library documentation: ManagementPortal Client Library

[yatharthranjan]

Pls see my comment in #522