Feature: Support file type messages on widget and dashboard (#659)

- Adds support for file upload

Co-authored-by: Pranav Raj Sreepuram <pranavrajs@gmail.com>
Co-authored-by: Sojan <sojan@pepalo.com>

app/javascript/widget/i18n/en.js

@@ -0,0 +1,8 @@
+export default {
+  COMPONENTS: {
+    FILE_BUBBLE: {
+      DOWNLOAD: 'Download',
+      UPLOADING: 'Uploading...',
+    },
+  },
+};

app/javascript/widget/i18n/index.js

@@ -0,0 +1,5 @@
+import en from './en';
+
+export default {
+  en,
+};