NCS: extract some API communication schemas

[alberto-crossmint]

Description

Extracting communications schemas to this common library so we can handled them in a centralized way

Test plan

It's just copied from the iframes repo, so nothing else. Will substitute this lib in both the iframe, the relayer and the tee and test e2e.

Package updates

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1 Skipped Deployment

Name	Status	Preview	Comments	Updated (UTC)
smart-wallet-auth-demo	⬜️ Ignored (Inspect)	Visit Preview		Jun 25, 2025 9:32pm

[changeset-bot[bot]]

🦋 Changeset detected

Latest commit: b17194d3ef9d5b326ec8a84ccab157b4d5f4327a

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 11 packages

Name	Type
@crossmint/client-signers	Patch
expo-demo	Patch
@crossmint/client-sdk-react-base	Patch
@crossmint/client-sdk-react-native-ui	Patch
@crossmint/client-sdk-react-ui	Patch
@crossmint/wallets-sdk	Patch
@crossmint/auth-ssr-nextjs-demo	Patch
@crossmint/client-sdk-react-ui-starter	Patch
@crossmint/client-sdk-nextjs-starter	Patch
@crossmint/wallets-quickstart-devkit	Patch
@crossmint/client-sdk-smart-wallet-next-starter	Patch

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