add github commands cheatsheet

[at-the-vr]

hey Vicky, when your talking about this cheatsheet, in which format your asking for (markdown file or something related ?)

[pwnb0y]

hello @AtharvaTwS we receive only markdown file.

[Ajiboso-Adeola]

I would love to contribute on this issue

[pwnb0y]

hey @Ajiboso-Adeola you can go on with it best of luck 👍