Add the rust std as a custom sysroot

user/shell/src/main.rs

@@ -0,0 +1,9 @@
+fn main() {
+    let a = std::env::args();
+    for a in a {
+        println!("Argument: {}", a);
+    }
+    println!(
+        "Hello from PIC program loaded dynamically with custom std and a better justfile, and syscalls ! "
+    );
+}