REFACTOR: Support bundling our admin section as an ember addon

app/assets/javascripts/admin/addon/components/highlighted-code.js

@@ -0,0 +1,11 @@
+import Component from "@ember/component";
+import { on, observes } from "discourse-common/utils/decorators";
+import highlightSyntax from "discourse/lib/highlight-syntax";
+
+export default Component.extend({
+  @on("didInsertElement")
+  @observes("code")
+  _refresh() {
+    highlightSyntax(this.element, this.siteSettings, this.session);
+  },
+});