convert arg parsing errors into stderr printing, remove main_cli

installer/src/main.rs

@@ -1,6 +1,7 @@
-#[tokio::main(flavor = "current_thread")]
-async fn main() {
-    if let Err(e) = installer::main_cli().await {
+fn main() {
+    let args: Vec<String> = std::env::args().skip(1).collect();
+
+    if let Err(e) = installer::run_with_callback(args.iter().map(|s| s.as_str()), None) {
         eprintln!("{e:?}");
         std::process::exit(1);
     }