add hero runner and clean improve runner lib

lib/runner/async_runner.rs

@@ -226,10 +226,6 @@ impl Runner for AsyncRunner {
         Ok("Job spawned for async processing".to_string())
     }
 
-    fn runner_type(&self) -> &'static str {
-        "Async"
-    }
-    
     fn runner_id(&self) -> &str {
         &self.runner_id
     }