Add xperimental features and add table for how sync works

[joaniekube]

Description

• Update explanation of syncs and add experimental feature

Issue(s) fixed

Fixes #1626

Preview

• https://besu-docs-git-xperimental-method-update-hyperledger.vercel.app/public-networks/get-started/connect/sync-node
• https://besu-docs-git-xperimental-method-update-hyperledger.vercel.app/private-networks/reference/cli/options

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Name	Status	Preview	Comments	Updated (UTC)
besu-docs	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Oct 4, 2024 2:29am

[joaniekube]

@matthew1001 Please review when you have a chance.

[joaniekube]

@matthew1001 please take another look. Does this PR look like it is good to go now?

[joaniekube]

Thank you so much! Will add suggestions