Add docs for catalogs

[gluxon]

Changes

Adding docs for:

• https://github.com/pnpm/rfcs/pull/1
• https://github.com/pnpm/pnpm/releases/tag/v9.5.0

Questions

• Is it worth writing a comparison to pnpm.overrides? This was in the RFC, but I don't think it'll be that common of a user-facing question.
• Anything I forgot to mention? 🙂

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Name	Status	Preview	Comments	Updated (UTC)
pnpm-io	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Jul 7, 2024 5:40pm

[gluxon]

Thanks @zkochan!