Add a Contributing.md file for guiding users on how to setup locally

[m-code12]

We could add a Contributing.md file wherein we could guide newcomers to set up this repo locally on their machine and could also guide them on how they could make a pr or contribute by helping them with all the commands and how the command works .

[m-code12]

@pbteja1998 @duttakapil Can I work on this issue ?

[pbteja1998]

@m-code12 assigned this to you.

[m-code12]

Okay.Will make a pr soon.