Generate ConsoleAppBuilder template code without Run/RunAsync

Author: neuecc

ReadMe.md

@@ -1492,8 +1492,6 @@ app.Add("foo", (int x, int y) => { });
 
 // get cli-schema as objects
 CommandHelpDefinition[] schema = app.GetCliSchema();
-
-app.Run(args); // needs geenerate trigger of ConsoleAppFramework.
 ```
 
 `CommandHelpDefinition` is the same one used internally for help output.

src/ConsoleAppFramework/ConsoleAppGenerator.cs

@@ -259,7 +259,8 @@ static void EmitConsoleAppBuilder(SourceProductionContext sourceProductionContex
             return;
         }
 
-        if (!hasRun && !hasRunAsync) return;
+        // need to generate template codes
+        // if (!hasRun && !hasRunAsync) return;
 
         var sb = new SourceBuilder(0);
         sb.AppendLine(ConsoleAppBaseCode.GeneratedCodeHeader);