Add CONTRIBUTING.md file.

[Pranjalll01]

Hey @awaismirza
Pranjal Kushwaha here , Contributor@GSSoc'24
repo currently lacks a CONTRIBUTING.md file, which is an important resource for guiding potential contributors on how to engage with the project effectively. A CONTRIBUTING.md file outlines the contribution guidelines, coding standards, and procedures for submitting pull requests, thus streamlining the contribution process and ensuring consistency across contributions.

could ypu please assign this to me ?

[suhanipaliwal]

I would like to work on this issue. Please assign me this task.

[officeneerajsaini]

@awaismirza , I'd like to work on this issue under GSSOC. Could you please add the necessary label and tag to the issue and assign it to me?

[Paavni-Goyal]

@awaismirza , I'd like to work on this issue under GSSOC'24. Could you please assign it to me?