Add scss colors into rust via build-script, flesh out math evaluation in launcher, Restructure some code

src/main.rs

@@ -1,14 +1,12 @@
 use crate::backend::Backend;
 mod backend;
-mod config;
 mod css;
-mod ctl;
 mod ui;
 
-use crate::config::Config;
 use glib::clone;
 use gtk::prelude::*;
 use gtk::{Application, CssProvider, gdk, gio};
+use jmb_bar::config::Config;
 use jmb_logger_rs::*;
 use notify::RecommendedWatcher;
 use std::cell::RefCell;