.Net: Process visualization POC - Step 1

[markwallace-microsoft]

As a developer I can execute and preview a process which I have defined delcaratively

• Create declarative representations of the process getting started samples
• Extend SKConsoleApp to execute each sample
• Add support for a new file type to SK Tools e.g. .process.yml
• Add action to execute a .process.yml file and display results in output window
• Add action to preview a .process.yml file and display a graphical visualization

[crickman]

Might be worthwhile to be aware of this POC: https://github.com/microsoft/semantic-kernel/blob/main/dotnet/samples/GettingStartedWithProcesses/Utilities/MermaidRenderer.cs