docs: add the panosim simulator page under digital twin

[wobuzhuchele]

Description

Add the PanoSim simulator page. Based on PanoSim V32 and Autoware.universe, it includes bridge, map ,scenarios, installation tutorial.

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[github-actions]

Documentation URL: https://autowarefoundation.github.io/autoware-documentation/pr-580/
Modified URLs:

• https://autowarefoundation.github.io/autoware-documentation/pr-580/demos/digital-twin-demos/panosim-demo/

[xmfcx]

The links are functional too. Thank you @wobuzhuchele