feat: Dynamic command loader, default command with module registry

Commands/Container/Module.cs

@@ -0,0 +1,26 @@
+using Automancer.Command.Image;
+using Automancer.Common;
+using Spectre.Console.Cli;
+
+namespace Automancer.Command.Container;
+
+public class Module : ICommandModuleWithRegistry
+{
+    public void Configure(IConfigurator config)
+    {
+        // No implementation needed here
+    }
+
+    public void Configure(IConfigurator config, CommandRegistry registry)
+    {
+        config.AddBranch("container", container =>
+        {
+            var description = "Container operations";
+            
+            container.SetDescription(description);
+            registry.Add("container", description);
+
+            container.AddCommand<PsCommand>("ps").WithDescription("List containers");
+        });
+    }
+}

Commands/Container/PsCommand.cs

@@ -0,0 +1,31 @@
+using System.ComponentModel;
+using Spectre.Console.Cli;
+
+namespace Automancer.Command.Image;
+
+public class PsSettings: CommandSettings
+{
+    [CommandArgument(0, "[path]")]
+    [Description("Path to the Dockerfile")]
+    public string? Path { get; set; }
+
+    [CommandOption("-t|--tag")]
+    [Description("Tag to use for the image")]
+    public string? Tag { get; set; }
+
+    [CommandOption("-f|--file")]
+    [Description("Path to the Dockerfile")]
+    public string? File { get; set; }
+
+}
+
+public class PsCommand: Command<BuldSettings>
+{
+    public override int Execute(CommandContext context, BuldSettings settings)
+    {
+        Console.WriteLine($"Building image from {settings.Path} with tag {settings.Tag}");
+
+        return 0;
+    }
+}
+