Add proper contribution guidelines to this project

[hasnainmakada-99]

I would like to request the maintainers of this repository that I would like to make some changes in the documentation part and also add some proper contribution guidelines for beginners to contribute to this project

@Carmendelope
@dhiguero

[dhiguero]

Hi @hasnainmakada-99 , we are happy to accept contributions. Reference this issue when sending the PR.