Subcommands in Help print - Syntax review

[BlackPhlox]

Based on the discussion in #123. I have moved to using an app-based method to set the display of subcommands to :

app.SubcommandHelp(DisplayType.Default);

I want this PR to be an ongoing discussion to define all the possible cases in the test that should pass, before revising the generator. Input is very much appreciated.

I don't think it makes sense to move forward with #125 before this PR gets resolved.

[DamianReeves]

Not strictly concerning this change, but related. It would nice to expose a method that user code can call to show the help for a command. Currently I can't see how to do this without totally rebuilding the help.

[BlackPhlox]

Not strictly concerning this change, but related. It would nice to expose a method that user code can call to show the help for a command. Currently I can't see how to do this without totally rebuilding the help.

@DamianReeves where in user code are you thinking of?

Something like this? :

// Program.cs
var app = ConsoleApp.Create();
app.Add<TestCommand>("test");
app.Run(args);

string testHelpOutput = app.GetHelp("test");

or via Dependency Injection in a command?