chore: add stub for remote copier

crates/voidpin/src/main.rs

@@ -19,6 +19,15 @@ struct Command {
 enum Commands {
     Listen {},
     Copy {},
+    Remote {
+        #[command(subcommand)]
+        command: RemoteCommands,
+    },
+}
+
+#[derive(Subcommand)]
+enum RemoteCommands {
+    Copy {},
 }
 
 #[tokio::main]
@@ -47,6 +56,9 @@ async fn main() -> anyhow::Result<()> {
             tracing::debug!(content = &input, "found content");
             state.local_copier().copy(input.as_bytes()).await?;
         }
+        Commands::Remote { command } => match command {
+            RemoteCommands::Copy {} => todo!(),
+        },
         _ => (),
     }