adding code_of conduct.md

[jyothimanoj12]

A Code of Conduct ensures inclusivity, prevents harassment, clarifies behavioral expectations, encourages professionalism, and fosters a safe, welcoming community for contributors.

plz assisn me this issue under gsoc-extended , level 1 , hacktoberfest-accepted tag

[0xSaksham]

Try to create one and create a related PR.

[jyothimanoj12]

Can you assign me and add gsoc ext and hacktoverfest accepted tags