Add GitHub Actions CI/CD pipeline for automated releases to GitHub Releases

[Copilot]

This PR implements a complete CI/CD pipeline solution to automatically build and publish AutoDeployTool releases to GitHub Releases, addressing the request "帮我做一个流水线，发布到Releases".

What's Added

🚀 Automated Release Pipeline

• Trigger: Automatically runs when Git tags (v*) are pushed
• Build Environment: Windows Server 2022 with .NET 8.0
• Output: AutoDeployTool-{version}.zip containing the complete application
• Publication: Automatic GitHub Release creation with Chinese descriptions

🔄 Continuous Integration

• Trigger: Pull requests and pushes to main/master branches
• Purpose: Validate builds and ensure code quality before releases

📚 Complete Documentation Suite

• RELEASE.md - Quick release process guide
• docs/PIPELINE_GUIDE.md - Comprehensive pipeline usage instructions
• Updated README.md with release process integration
• Build.ps1 - Local development build script

🛠️ Developer Experience Improvements

• GitHub issue template for standardized release requests
• Multiple release trigger methods (Git tags, GitHub UI, manual workflow dispatch)
• Detailed troubleshooting guides and best practices

Usage Examples

Create a Release via Git Tag

git tag v2.1.0
git push origin v2.1.0

Manual Workflow Trigger

1. Go to Actions → "Build and Release"
2. Click "Run workflow"
3. Enter version tag

Technical Details

• Platform: Windows-only build (WPF application)
• Framework: .NET 8.0
• Package Format: Self-contained ZIP with all dependencies
• Release Notes: Automatically generated in Chinese
• Versioning: Supports semantic versioning (v1.0.0 format)

The pipeline is immediately ready for use and will automatically handle all future releases when tags are created.

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