Fix clippy errors

libk/src/std/application.rs

@@ -0,0 +1,16 @@
+use crate::prelude::*;
+
+mod window;
+
+pub trait Application {
+    type Output;
+
+    async fn run(&mut self, args: Vec<String>) -> Result<Self::Output, Error>;
+}
+
+#[derive(Debug)]
+pub enum Error {
+    UnknownCommand(String),
+    ApplicationFailed(String),
+    KernelError(String),
+}