refactor mega-commit.

- reorganised the entire project so that the entire kernel is a single codebase rather than a kernel and a libk.

kernel/src/std/application.rs

@@ -0,0 +1,19 @@
+use alloc::string::String;
+use alloc::vec::Vec;
+
+pub mod frame;
+pub mod render;
+pub 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),
+}