Add code of conduct

[S-ishita]

Hi there!
I recommend adding a CODE_OF_CONDUCT.md file to your repository. This file would serve as a guide for potential contributors, providing them with a clear set of expectations, guidelines, and behavior standards for participating in your project. It plays an essential role in creating a welcoming and inclusive environment for everyone involved.

I would like to work on this issue. Please assign it to me under GSSoC'23.

Thank you!

[Yogesh-7523]

@PradyumnaKrishna I have experience in cyber security and I know the importance of a code of conduct
Respectful Communication, Inclusivity, and Open-mindedness are some key aspects to use it
please assign this under GSSOC 23 to me so that I can contribute to this project :)

[PradyumnaKrishna]

Sure, @S-ishita you can work on this.