Add Kunal Kushwaha's Git and Github tutorial under the Git and Github section

[sanjeeban5644]

Current Behaviour

Expected Behaviour

[sanjeeban5644]

Hi! I am Sanjeeban. If you feel this Issue is valid, I would really like to be assigned to this. I would really like to submit a Pull Request regarding this Issue. :)
Thankyou!

[Raj-Mandhyan]

I’d like to work on this issue. Please assign it to me.