Add Axiom tour

[tothmano]

This PR integrates the interactive demo of Axiom to the docs as a new entry in the left nav that opens in a new browser tab.

Preview: https://axiom-mano-axiom-tour.mintlify.app/introduction

Background

We have three ways of integrating the interactive demo into the docs:

• New page in getting started: The drawback is that you can only navigate back by clicking Documentation which is not intuitive.
• New tab: This adds a new tab which might be too prominent for this demo.
• A new entry in the left nav that opens in a new browser tab (preferred).

I've tried the other ways of embedding the demo to the docs (like pop-up), but they didn't work for me.