Docs update with more pricing info

[glitch003]

Prices for naga aren't clear - this adds some docs with more info on how it works, and current prices

[Copilot]

Pull request overview

This PR adds comprehensive pricing documentation to the Lit Protocol docs, addressing the lack of clarity around Naga network pricing. The changes introduce two new documentation pages explaining the payment model and displaying current prices, along with a React component that fetches real-time pricing data from the blockchain.

• Adds a dynamic pricing table component that fetches current prices from the Lit Chain PriceFeed contract
• Creates payment model documentation explaining the token-based payment system, dynamic pricing, and how to get started
• Adds a current prices page with detailed breakdowns of pricing components for all Lit Protocol services

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 5 comments.

File	Description
docs/snippets/CurrentPricesTable.jsx	New React component that fetches and displays real-time pricing data from the blockchain, including base, max, and current prices for all products, plus detailed Lit Action pricing components
docs/learning-lit/pricing/payment-model.mdx	New documentation explaining Lit Protocol's token-based payment system, dynamic pricing model, and getting started guide
docs/learning-lit/pricing/current-prices.mdx	New documentation page that renders the pricing table component and explains the different price types and product categories
docs/docs.json	Adds new "Pricing" navigation group to the "Learning Lit" tab with links to the two new pricing pages

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[Ansonhkg]

@GTC6244 commented: "the only part that may be a bit confusing is the Lit Actions pricing. It might be nice to give an example - ie, simple cross-chain swap that takes 10 seconds and requires two signatures …. along with with a super low price ( maybe compared to some other service!? ). 😉
I could see the sheer volume of information might make people wonder - but if we can equate it to something that they understand, it should be easier to digest. Might even note that we price individual items like AWS or something ( … though I guess that depends on how everyone feels about AWS pricing models! )"

[Ansonhkg]

^