Add RestConfiguration class

Required Actions

• Add the RestConfiguration class in the package uk.ac.rhul.cs2800.config.
• Expose the IDs of the Student, Module, and Grade entities in API responses.

Expected Deliverables:

• A fully functional RestConfiguration class located in uk.ac.rhul.cs2800.config.
• IDs for the Student, Module, and Grade entities should be visible in the REST API responses.