Add a tutorial to the documentation

[godlygeek]

Make our documentation more approachable by adding a quick tutorial showing how to get started with the basic features of PyStack.

[Gigi1111]

I'd like to be assigned to this issue to work on this.

[manasomali]

I would like to work in this issue.

[sarahmonod]

Hi @Gigi1111 as part of the PyCon US 2024 sprints we are working on PyStack, and it's been a year since you said you wanted to work on this, so I'll assign it to someone else.

Do feel free to add/improve on what we are doing with your own PR later as well though!