Add two more CLI verbs to implement

MultiversalDiplomacy/CommandLine/ImageOptions.cs

@@ -0,0 +1,15 @@
+using CommandLine;
+
+namespace MultiversalDiplomacy.CommandLine;
+
+[Verb("image", HelpText = "Generate an image of a game state.")]
+public class ImageOptions
+{
+    [Value(0, HelpText = "Input file describing the game state to visualize, or - to read from stdin.")]
+    public string? InputFile { get; set; }
+
+    public static void Execute(ImageOptions args)
+    {
+        throw new NotImplementedException();
+    }
+}

MultiversalDiplomacy/CommandLine/ReplOptions.cs

@@ -0,0 +1,18 @@
+using CommandLine;
+
+namespace MultiversalDiplomacy.CommandLine;
+
+[Verb("repl", HelpText = "Begin an interactive 5dplomacy session.")]
+public class ReplOptions
+{
+    [Option('i', "input", HelpText = "Begin the repl session by executing the commands in this file.")]
+    public string? InputFile { get; set; }
+
+    [Option('o', "output", HelpText = "Echo the repl session to this file. Specify a directory to autogenerate a filename.")]
+    public string? OutputFile { get; set; }
+
+    public static void Execute(ReplOptions args)
+    {
+        throw new NotImplementedException();
+    }
+}

MultiversalDiplomacy/Program.cs

@@ -9,9 +9,15 @@ internal class Program
     static void Main(string[] args)
     {
         var parser = Parser.Default;
-        var parseResult = parser.ParseArguments<AdjudicateOptions>(args);
+        var parseResult = parser.ParseArguments(
+            args,
+            typeof(AdjudicateOptions),
+            typeof(ImageOptions),
+            typeof(ReplOptions));
 
         parseResult
-            .WithParsed(AdjudicateOptions.Execute);
+            .WithParsed<AdjudicateOptions>(AdjudicateOptions.Execute)
+            .WithParsed<ImageOptions>(ImageOptions.Execute)
+            .WithParsed<ReplOptions>(ReplOptions.Execute);
     }
-}
+}