Client React UI SDK: Wallet provider wrapper for useAuth core (part 2)

[jmderby]

Description

This contains the changes for adding the smart wallet state within the useAuth hook from auth core by creating a wrapper provider and extending functionality of auth core.

Hooks added to React UI:

• useAuth extends regular auth core useAuth hook but adds wallet context.
• CrossmintAuthProvider extends regular AuthProvider from core but adds context provider and createWallet function.

Test plan

Nextjs demo flow (part 1) all works as expected using this PR's changes

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Latest commit: af9ca3e082ebc9483360c956a1172bedd2956a65

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[jmderby]

Few annotations i'm bumping as a reminder:

• https://github.com/Crossmint/crossmint-sdk/pull/660#discussion_r1719103468
• https://github.com/Crossmint/crossmint-sdk/pull/660#discussion_r1719102923
• https://github.com/Crossmint/crossmint-sdk/pull/660#discussion_r1718960995