implement submission page

app/javascript/application.js

@@ -10,6 +10,7 @@ import MenuActive from './elements/menu_active'
 import ClipboardCopy from './elements/clipboard_copy'
 import TemplateBuilder from './template_builder/builder'
 import DynamicList from './elements/dynamic_list'
+import DownloadButton from './elements/download_button'
 
 document.addEventListener('turbo:before-cache', () => {
   window.flash?.remove()
@@ -28,6 +29,7 @@ window.customElements.define('file-dropzone', FileDropzone)
 window.customElements.define('menu-active', MenuActive)
 window.customElements.define('clipboard-copy', ClipboardCopy)
 window.customElements.define('dynamic-list', DynamicList)
+window.customElements.define('download-button', DownloadButton)
 
 window.customElements.define('template-builder', class extends HTMLElement {
   connectedCallback () {