fix(package): exclude Skugga.Core.Generators from nuget package

[Digvijay]

Description

Type of Change

• 🐛 Bug fix (non-breaking change fixing an issue)
• ✨ New feature (non-breaking change adding functionality)
• 💥 Breaking change (fix or feature causing existing functionality to change)
• 📚 Documentation update
• ⚡ Performance improvement
• 🧹 Code refactoring
• ✅ Test improvements

Checklist

• Code builds successfully (dotnet build)
• All tests pass (dotnet test)
• New tests added for new functionality
• Code follows coding standards
• Commits follow conventional commit format
• Documentation updated (if needed)
• Native AOT compatibility verified
• No new TODOs added without corresponding GitHub issues
• Performance impact considered (run benchmarks if applicable)

Related Issues

Testing

Performance Impact

• No performance impact
• Performance improved (include benchmark results)
• Performance impact acceptable (explain why)

Screenshots/Output

Additional Notes