add pdf generation

app/views/esign_settings/index.html.erb

@@ -0,0 +1,10 @@
+<%= form_for '', url: settings_esign_index_path, method: :post do |f| %>
+  <file-dropzone data-name="verify_attachments">
+    <label for="file">
+      <input id="attachment_uuid" name="attachment_uuid" class="hidden" data-target="file-dropzone.valueField" type="text">
+      <input id="file" class="hidden" data-action="change:file-dropzone#onSelectFiles" data-target="file-dropzone.input" type="file">
+      LCick to upload
+    </label>
+  </file-dropzone>
+  <%= f.button button_title %>
+<% end %>