[New Feature] Script for Encrypting and Decrypting files

[HarshYadav152]

I want to add new script for encrypting and decrypting files.
Under Security

[github-actions]

Thank you for raising this issue!

We'll review it as soon as possible. We truly appreciate your contributions! ✨

Meanwhile make sure you've visited the README.md, CONTRIBUTING.md, and CODE_OF_CONDUCT.md before creating a PR for this. Also, please do NOT create a PR until this issue has been assigned to you. 😊

[HarshYadav152]

I will give an update on 10th of September