Highlight code in articles using highlight.js

app/Resources/static/themes/_global/js/highlight.js

@@ -0,0 +1,8 @@
+import 'highlight.js/styles/atom-one-light.css';
+import * as hljs from 'highlight.js';
+
+window.addEventListener('load', () => {
+  document.querySelectorAll('pre').forEach((node) => {
+    hljs.highlightBlock(node);
+  });
+});