chore: consolidate broadly used js + cleanup

src/includes/base.liquid

@@ -155,5 +155,6 @@
       })()
     </script>
     {{ content }}
+    <script src="/assets/scripts/index.js?v={% appVersion %}" defer></script>
   </body>
 </html>

src/includes/partials/blocks/modal.liquid

@@ -1,7 +1,3 @@
-{%- capture js -%}
-  {% render "../../../assets/scripts/modal.js" %}
-{%- endcapture -%}
-<script>{{ js }}</script>
 {%- capture labelContent -%}
   {%- if icon -%}
     {% tablericon icon label %}

src/includes/partials/nav/menu.liquid

@@ -1,7 +1,3 @@
-{%- capture js -%}
-  {% render "../../../assets/scripts/menu.js" %}
-{%- endcapture -%}
-<script>{{ js }}</script>
 <div class="flex-centered">
   <input id="menu-toggle" type="checkbox" aria-hidden="true" />
   <label class="menu-button-container" for="menu-toggle" tabindex="0">