Convert table of primitives to positional arguments for external cmd (#2232)

* Convert table of primitives to positional arguments for external cmd

* Multiple file test, fix for cococo

crates/nu-cli/src/utils/test_bins.rs

@@ -7,12 +7,7 @@ pub fn cococo() {
         // Write back out all the arguments passed
         // if given at least 1 instead of chickens
         // speaking co co co.
-        let mut arguments = args.iter();
-        arguments.next();
-
-        for arg in arguments {
-            println!("{}", &arg);
-        }
+        println!("{}", &args[1..].join(" "));
     } else {
         println!("cococo");
     }