Implement autoload system for styles/scripts

resources/assets/styles/autoload/_bootstrap.scss

@@ -0,0 +1 @@
+@import "~bootstrap/scss/bootstrap";

resources/assets/styles/main.scss

@@ -1,12 +1,15 @@
 @import "common/variables";
 
+/** Import everything from autoload */
+@import "./autoload/**/*";
+
 /**
  * Import npm dependencies
  *
  * Prefix your imports with `~` to grab from node_modules/
  * @see https://github.com/webpack-contrib/sass-loader#imports
  */
-@import "~bootstrap/scss/bootstrap";
+// @import "~some-node-module";
 
 /** Import theme styles */
 @import "common/global";