[Hyperdrive] Adding a proper FAQ page

[Oxyjun]

Summary

1. Adding a single, proper FAQ page (instead of spreading them out across different chapters such as Pricing).
2. Using footnote components in the Limits page.

Screenshots (optional)

Documentation checklist

• The documentation style guide has been adhered to.
• If a larger change - such as adding a new page- an issue has been opened in relation to any incorrect or out of date information that this PR fixes.
• Files which have changed name or location have been allocated redirects.

[cloudflare-workers-and-pages]

Deploying cloudflare-docs with    Cloudflare Pages

Latest commit:	ec2d7af
Status:	✅  Deploy successful!
Preview URL:	https://42032098.cloudflare-docs-7ou.pages.dev
Branch Preview URL:	https://jun-hyperdrive-faq.cloudflare-docs-7ou.pages.dev

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[github-actions]

Files with changes (up to 15)

Original Link	Updated Link
https://developers.cloudflare.com/hyperdrive/reference/faq/	https://jun-hyperdrive-faq.cloudflare-docs-7ou.pages.dev/hyperdrive/reference/faq/
https://developers.cloudflare.com/hyperdrive/platform/pricing/	https://jun-hyperdrive-faq.cloudflare-docs-7ou.pages.dev/hyperdrive/platform/pricing/
https://developers.cloudflare.com/hyperdrive/platform/limits/	https://jun-hyperdrive-faq.cloudflare-docs-7ou.pages.dev/hyperdrive/platform/limits/
https://developers.cloudflare.com/hyperdrive/reference/wrangler-commands/	https://jun-hyperdrive-faq.cloudflare-docs-7ou.pages.dev/hyperdrive/reference/wrangler-commands/

[Harunbinissa]

Hi hello