Generate API Documentation

[HiteshSonetaNEU]

User Story

As a developer, I would like to add JSDoc comments to all important classes and methods in the backend, so that I can auto-generate clear, accessible API documentation in HTML format for current and future developers.

Detailed Description

The goal is to ensure the backend codebase for Xplore-NuBackend is well-documented using JSDoc. All key classes, functions, and methods should be annotated with JSDoc comments that describe their purpose, parameters, and return values.

Once documented, we will use a JSDoc tool to generate HTML pages containing the documentation, and include them in a docs/ folder within the repository. A link to the hosted documentation or to the folder in the repo will be added to the README for easy access.

This will greatly help with onboarding, debugging, and maintaining the codebase..

Acceptance Criteria

• Given a backend file with functions and classes, then each function/class should have JSDoc-style comments describing its purpose and behavior
• Given a documented codebase, then the jsdoc tool should be able to generate HTML documentation pages from it.
• Given the generated HTML files, then they should be placed in a docs/ folder in the root of the repository.