create very basic crate root

src/kernel/mod.rs

@@ -0,0 +1 @@
+// TODO: write this

src/main.rs

@@ -0,0 +1,9 @@
+#![no_std]
+#![no_main]
+
+mod kernel;
+
+#[panic_handler] // providing a panic handler since there is no std
+fn panic(_info: &core::panic::PanicInfo) -> !/*<-- function will never return (loop {} = while True(){})*/ {
+    loop {}
+}