feat: Add React Library

[alexlwn123]

This pull request introduces a React package. It includes the addition of a new context for the Fedimint Wallet, a custom hook for balance management, and updates to the project configuration files.

New Features:

• Added FedimintWalletContext and FedimintWalletProvider to manage the Fedimint Wallet state in the React application (packages/react/lib/contexts/FedimintWalletContext.tsx).
• Introduced useBalance hook to subscribe to and manage the wallet balance (packages/react/lib/hooks/useBalance.ts).
• Introduced useOpenWallet hook.
• Introduced useSendLightning and useReceiveLightning hooks.

Application Updates:

• Updated App.tsx to use the new useBalance hook and display the wallet balance (packages/react/src/App.tsx).

[changeset-bot]

🦋 Changeset detected

Latest commit: 0eb825d

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

This PR includes changesets to release 1 package

Name	Type
@fedimint/react	Patch

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[github-actions]

Size Change: +31 B (0%)

Total Size: 7.46 MB

Filename	Size	Change
packages/core-web/dist/index.js	2.47 kB	+31 B (+1.27%)

ℹ️ View Unchanged

Filename	Size
packages/core-web/dist/worker.js	679 B
packages/react/dist/fedimint-react.js	1 kB
packages/wasm-bundler/fedimint_client_wasm_bg.wasm	3.73 MB
packages/wasm-web/fedimint_client_wasm_bg.wasm	3.73 MB

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