chore(wallet-ui): initialize project (#3477)

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## PR-Codex overview
This PR focuses on adding Thirdweb Wallet UI to the project, configuring Next.js, Tailwind CSS, and PostCSS, setting up Biome, and defining TypeScript settings.

### Detailed summary
- Added Thirdweb Wallet UI
- Configured Next.js, Tailwind CSS, and PostCSS
- Set up Biome configuration
- Defined TypeScript settings for Wallet UI
- Added global CSS styles for the app
- Updated dependencies and scripts in package.json

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package.json

@@ -14,6 +14,8 @@
     "lint": "turbo run lint",
     "lint:legacy": "pnpm lint",
     "fix": "turbo run fix",
+    "wallet-ui": "turbo run dev --filter=./apps/wallet-ui --filter=./packages/thirdweb",
+    "wallet-ui:build": "turbo run build --filter=./apps/wallet-ui --filter=./packages/thirdweb",
     "playground": "turbo run dev --filter=./apps/playground-web --filter=./packages/thirdweb",
     "playground:build": "turbo run build --filter=./apps/playground-web",
     "dashboard": "turbo run dev --filter=./apps/dashboard --filter=./packages/thirdweb",