Add image ls and image rm commands

src/main.rs

@@ -1,10 +1,13 @@
 mod build;
+mod image;
 mod qemu;
 mod registry;
 
 use anyhow::Result;
 use clap::{Parser, Subcommand};
 
+use crate::image::ImageCmd;
+
 #[derive(Parser, Debug)]
 #[command(about = "Build bootable initrd VMs from container images")]
 struct Cli {
@@ -27,6 +30,9 @@ enum Commands {
         /// Image tag / registry subdir name
         name: String,
     },
+    /// List slim images in the registry
+    #[command(subcommand)]
+    Image(ImageCmd),
 }
 
 fn main() -> Result<()> {
@@ -38,6 +44,9 @@ fn main() -> Result<()> {
         Commands::Run { name } => {
             qemu::run(&name)?;
         }
+        Commands::Image(cmd) => {
+            image::run(cmd)?;
+        }
     }
     Ok(())
 }