feat: Dynamic command loader, default command with module registry

Commands/Image/Module.cs

@@ -0,0 +1,25 @@
+using Automancer.Common;
+using Spectre.Console.Cli;
+
+namespace Automancer.Command.Image;
+
+public class Module : ICommandModuleWithRegistry
+{
+    public void Configure(IConfigurator config)
+    {
+        // No implementation needed here
+    }
+    public void Configure(IConfigurator config, CommandRegistry registry)
+    {
+        config.AddBranch("image", image => {
+            var description = "Docker/podman image operations";
+            image.SetDescription(description);
+            registry.Add("image", description);
+
+            image.AddCommand<BuildCommand>("build").WithDescription("Build a docker image");
+            image.AddCommand<PushCommand>("push").WithDescription("Push a docker image");
+
+        });
+    }
+
+}