feat: Update ui screens

Separate script and assets block.

source/screens/demo/examples/game/intro.liquid

@@ -3,7 +3,6 @@ title: Intro
 tags:
 - game
 ---
-
 {% assign bodyClass = 'body_intro' -%}
 {% layout 'hippie/app.liquid' %}
 
@@ -46,9 +45,13 @@ tags:
 </div>
 {% endblock %}
 
-{%- block script %}
+{% block assets %}
 {{ block.super -}}
 <script src="/js/intro.js"></script>
+{% endblock %}
+
+{%- block script %}
+{{ block.super -}}
 <script>
 	//let intro = new Intro('Intro');
 	//intro.init();