Add support for juliaup (#208)

* Add support for juliaup

* Update config.rs

* Change the position for Juliaup Step.

* Update generic.rs

src/steps/node.rs

@@ -4,7 +4,6 @@ use std::os::unix::fs::MetadataExt;
 use std::path::PathBuf;
 use std::process::Command;
 
-
 use crate::sudo;
 use crate::utils::require_option;
 use color_eyre::eyre::Result;