Added CodeEmbed component to embed code snippets in markdowns

docs/src/css/custom.css

@@ -4,6 +4,8 @@
  * work well for content-centric websites.
  */
 
+ @import 'font-awesome/css/font-awesome.min.css';
+
 /* You can override the default Infima variables here. */
 :root {
     --ifm-color-primary: #2e8555;