Add .gitignore file

[naikmubashir]

Fixes #472

Add .gitignore File to Exclude node_modules

This PR introduces a .gitignore file to the repository, which now includes the node_modules directory. As a result, you can safely delete the node_modules folder from the repository, as it’s no longer necessary to track it in version control.

With this update:

• Future commits will no longer include the node_modules folder, reducing unnecessary clutter in the repository.
• Any dependencies can be reinstalled via npm install, as they are still managed by the package.json and package-lock.json files.

If you'd like, I can submit another pull request to remove the node_modules folder from the repository, or feel free to handle that separately.

Let me know how you'd like to proceed!

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