Allow the Page's resources front matter to control whether a JS script is imported as a module

resources:
  - src: script.js
    params:
      is_module: <true|false>

layouts/partials/head.html

@@ -57,7 +57,8 @@
   {{ end }}
 
   {{ range $script := .Resources.Match "*.js" }}
-  <script defer type="module" src="{{ $script.Permalink | relURL }}"></script>
+  {{ $isModule := default true $script.Params.is_module }}
+  <script defer {{ if $isModule }}type="module"{{ end }} src="{{ $script.Permalink | relURL }}"></script>
   {{ end }}
 
   <!-- Misc -->