🚀 Feature Request - Global Tool Support

This task describes the work required to distribute Fink as a .NET global tool so it can be installed via dotnet tool install -g fink.

Task Details

1. Update project for tool packaging

   • Add <PackAsTool>true</PackAsTool> to src/Fink/Fink.csproj.
   • Define <ToolCommandName>fink</ToolCommandName> so the command is fink.
   • Optionally specify PackageId, Version, and licensing metadata.
   • Keep OutputType set to Exe and maintain all project references.

2. Create packing workflow

   • Extend .github/workflows/ci.yml with a job triggered on release tags that executes dotnet pack.
   • Upload the resulting .nupkg as a workflow artifact and optionally publish to NuGet using a repository secret.

3. Document installation

   • Update README.md with instructions:

     dotnet tool install --global fink

   • Include commands for updating and uninstalling the tool.
   • Mention that the .NET 9.0 SDK is required.
   • Provide an example usage of fink <path> <framework> once installed.

This feature will make Fink easier to install and use across different environments and is planned for a future milestone.