[Docs] Add vizro-ai chart examples to docs

[nadijagraca]

Description

Added examples section with one page(chart examples)

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[nadijagraca]

Probably needs these few changes and I'm happy to pick it up tomorrow (Friday) and make edits direct on the branch once you've worked through anything you want to do from these suggestions.

I made a mixture of your and Li's change suggestions.

[stichbury]

Agree with the suggestion to bring the graphic to the front in this case!