Create a Jupyter notebook with gates worked out explicitly

[dabacon]

This would help clarify some of the "half angle" confusions.

[vtomole]

What's the update on this?

[vtomole]

We couldn't find this because Jupyter is misspelled (juptyer). @dabacon what's the context on this? Could be a two birds one stone with: #1564

[dabacon]

A possible documentation page to think about @karlunho a notebook or page with all of the gates (gate zoo)

[MichaelBroughton]

Is this still in flight @dabacon ? Is this relevant : https://quantumai.google/cirq/gates ?

[dabacon]

Still in flight, doing two qubit gates next.