Astro website migrate all components to astro components

[timotheeguerin]

progress for #2564

• Get rid of fluent ui jsx apart from the playground as it cannot be SSr with astro
• Use pure astro components for everything which force them to be fully rendered on the UI

[azure-sdk]

No changes needing a change description found.

[azure-sdk]

You can try these changes here

🛝 Playground	🌐 Website	📚 Next docs

[chrisradek]

Posting some oddities I'm seeing with these changes:

smaller example doesn't fill 'screen' space

No footer in the new version
Left side is this PR, right side is current docusaurus version. Not sure how important it is to have the footer, though might be nice to still have the privacy/trademarks/terms of use links there.

Lack of padding on community page

model props have same color as decorators
This is pretty nit picky/subjective, but I liked that the old version of the docs used a different color for model properties than for decorators - made it very easy to see what the decorators applied to. Not sure how much control we have here.