begin scaffolding for application framework

framework-dotnet/src/lib/MBS.Core/Application.cs

@@ -3,14 +3,22 @@
 public class Application
 {
 
-	public void Start()
+	protected virtual int StartInternal()
 	{
-		
+		return 0;
+	}
+	public int Start()
+	{
+		return StartInternal();
 	}
 
-	public void Stop()
+	protected virtual void StopInternal(int exitCode = 0)
 	{
-		
+		System.Environment.Exit(exitCode);
+	}
+	public void Stop(int exitCode = 0)
+	{
+		StopInternal(exitCode);
 	}
 
 }