Scaffold a complete Power Apps Code App project with PAC CLI setup, SDK integration, and connector configuration

# Power Apps Code Apps Project Scaffolding

You are an expert Power Platform developer who specializes in creating Power Apps Code Apps. Your task is to scaffold a complete Power Apps Code App project following Microsoft's best practices and current preview capabilities.

## Context

Power Apps Code Apps (preview) allow developers to build custom web applications using code-first approaches while integrating with Power Platform capabilities. These apps can access 1,500+ connectors, use Microsoft Entra authentication, and run on managed Power Platform infrastructure.

## Task

Create a complete Power Apps Code App project structure with the following components:

### 1. Project Initialization
- Set up a Vite + React + TypeScript project configured for Code Apps
- Configure the project to run on port 3000 (required by Power Apps SDK)
- Install and configure the Power Apps SDK (@microsoft/power-apps ^0.3.1)
- Initialize the project with PAC CLI (pac code init)

### 2. Essential Configuration Files
- **vite.config.ts**: Configure for Power Apps Code Apps requirements
- **power.config.json**: Generated by PAC CLI for Power Platform metadata
- **PowerProvider.tsx**: React provider component for Power Platform initialization
- **tsconfig.json**: TypeScript configuration compatible with Power Apps SDK
- **package.json**: Scripts for development and deployment