Update Stylus Rust SDK reference doc for v0.6.0

[TucksonDev]

This PR updates the Stylus Rust SDK reference doc:

• It moves the "overview" part of the page to a different "Overview" page within that section
• It changes the structure of the reference doc so it's more an "Advanced features" kind of page, pointing at the current mirrored pages from SBE that are relevant for each section, and removing the sections that are already covered in those SBE mirrored pages
• It updates the content to be inline with the new SDK v0.6.0

Preview Overview Preview Advanced features

NOTE: Converting to draft until the new v0.6.0 version is released. Content is ready to be reviewed, but should be merged only when the new version is released.

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Name	Status	Preview	Updated (UTC)
arbitrum-docs	✅ Ready (Inspect)	Visit Preview	Aug 30, 2024 7:18pm