Better rendering of list-table

[HuangJunye]

Qiskit/qiskit#9549 uses list-table extensively and the rendering is not optimal.

The table width scales with the content; does not stretched to the full width which I personally find aesthetically not pleasing.

This can probably be improved by css.

[woodsp-ibm]

Can we also render - or have a option to render, cells so they are vertically top aligned. The X,Y,Z,I alternative is Pauli and the center alignment - with the extra content in the right hand cell, makes the center alignment not so suitable here I think. IMO it would look better as per this manually edited image

[Eric-Arellano]

list-table looks much better in the new Furo theme (#425). It takes up the full screen real estate, and the design is aligned with Carbon and qiskit.org.

We released 1.13.0rc1 today and are looking for feedback on the new theme. Feel free to reopen this issue if you have suggestions for further improvements.