Simplify launching Rocket

src/main.rs

@@ -10,10 +10,7 @@
 #![deny(missing_docs)]
 
 /// Sets up and launches Rocket.
-#[rocket::main]
-async fn main() -> Result<(), rocket::Error> {
-    let rocket = podbringer::setup();
-    let _ = rocket.ignite().await?.launch().await?;
-
-    Ok(())
+#[rocket::launch]
+fn rocket() -> _ {
+    podbringer::setup()
 }