chore: 🤖 add prettier for auto-formatting JS and SCSS

addons/rose/testem.js

@@ -17,9 +17,9 @@ module.exports = {
         //'--disable-software-rasterizer',
         '--mute-audio',
         '--remote-debugging-port=0',
-        '--window-size=1440,900'
-      ].filter(Boolean)
+        '--window-size=1440,900',
+      ].filter(Boolean),
     },
-    Firefox: ['-headless', '--window-size=1440,900']
-  }
+    Firefox: ['-headless', '--window-size=1440,900'],
+  },
 };