feat: Implement build tools management system in VS Code extension

[sanchuanhehe]

• Add EnvironmentManager for managing VS Code environment variables.
• Introduce BuildToolsManager to handle detection, configuration, and environment setup for build tools.
• Create ConfigurationResolver for parsing and managing build tool configurations.
• Implement integration example to demonstrate build tools management in the extension.
• Define types for build tools configuration and environment.
• Update meta information and configuration keys for new build tools features.
• Ensure legacy configuration migration and validation for user paths.

[sanchuanhehe]

还未测试

[Copilot]

Pull Request Overview

This PR implements a comprehensive build tools management system for the VS Code extension, providing automated detection, configuration, and environment management for HarmonyOS development tools.

• Add automated build tools detection system supporting both DevEco Studio and command-line-tools installations
• Implement VS Code environment variable management with integrated PATH and SDK configuration
• Create configuration resolver with legacy migration support and validation capabilities

Reviewed Changes

Copilot reviewed 10 out of 11 changed files in this pull request and generated 7 comments.

Show a summary per file

File	Description
packages/vscode/src/build-tools/types.ts	Define TypeScript interfaces and types for build tools configuration
packages/vscode/src/build-tools/detector.ts	Implement automated detection logic for various build tool installations
packages/vscode/src/build-tools/environment.ts	Manage VS Code environment variables and PATH configuration
packages/vscode/src/build-tools/resolver.ts	Handle configuration parsing, validation, and legacy migration
packages/vscode/src/build-tools/manager.ts	Orchestrate the entire build tools system with commands and status management
packages/vscode/src/build-tools/index.ts	Export public API for build tools system
packages/vscode/src/build-tools/integration-example.ts	Demonstrate integration patterns for the extension
packages/vscode/package.json	Add new configuration settings for build tools management
packages/vscode/package.nls.zh-cn.json	Add Chinese translations for new configuration descriptions
packages/vscode/README.md	Update documentation with new configuration options

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