Language marker quarto extension

def fib(n):
    if n < 2:
        return n
    return fib(n-1) + fib(n-2)
fib <- function(n) {
    if (n < 2) {
        n
    } else {
        fib(n-1) + fib(n-2)
    }
}
SELECT "HELLO WORLD"
function onClick() {
    alert("hello world");
}
interface User {
  name: string;
  id: number;
}

const user: User = {
  name: "Hayes",
  id: 0,
};
int main() {
    return 0;
}
fn main() {
    println!("Hello, world!");
}
public class Greetings {
    public static void main(String[] args) {
        System.out.println("Hello, world!");
    }
}
print("Hello" .. " world!")