move subcommands to new parser

src/dotnet/commands/dotnet-list/Program.cs

@@ -4,6 +4,7 @@
 using System;
 using System.Collections.Generic;
 using Microsoft.DotNet.Cli;
+using Microsoft.DotNet.Cli.CommandLine;
 using Microsoft.DotNet.Cli.Utils;
 using Microsoft.DotNet.Tools.List.ProjectToProjectReferences;
 
@@ -15,10 +16,11 @@ namespace Microsoft.DotNet.Tools.List
         protected override string FullCommandNameLocalized => LocalizableStrings.NetListCommand;
         protected override string ArgumentName => Constants.ProjectArgumentName;
         protected override string ArgumentDescriptionLocalized => CommonLocalizableStrings.ArgumentsProjectDescription;
-        internal override List<Func<DotNetSubCommandBase>> SubCommands =>
-            new List<Func<DotNetSubCommandBase>>
+
+        internal override Dictionary<string, Func<AppliedOption, CommandBase>> SubCommands =>
+            new Dictionary<string, Func<AppliedOption, CommandBase>>
             {
-                ListProjectToProjectReferencesCommand.Create,
+                { "list", o => new ListProjectToProjectReferencesCommand(o) }
             };
 
         public static int Run(string[] args)
@@ -27,4 +29,4 @@ namespace Microsoft.DotNet.Tools.List
             return command.RunCommand(args);
         }
     }
-}
+}