fix mkdir arg to use filepath as type, dont log completion if not on dev profile

src/cmd/mkdir.rs

···
         Signature::build("mkdir")
             .required(
                 "path",
-                SyntaxShape::String,
+                SyntaxShape::Filepath,
                 "path of the directory(s) to create",
             )
             .input_output_type(Type::Nothing, Type::Nothing)

src/completion/helpers.rs

···
 #[macro_export]
 macro_rules! console_log {
     ($($arg:tt)*) => {
+        #[cfg(debug_assertions)]
         web_sys::console::log_1(&wasm_bindgen::JsValue::from_str(&format!($($arg)*)));
     };
 }