feat: Add an extended bubble design for the widget (#1123)

* feat: Add a new design for chat bubble

Signed-off-by: Pranav Raj Sreepuram <pranavrajs@gmail.com>

* Add i18n

* Fix stye issues

* Set fixed font-size

* Update docs for bubble

app/javascript/sdk/DOMHelpers.js

@@ -1,4 +1,4 @@
-import { SDK_CSS } from '../widget/assets/scss/sdk';
+import { SDK_CSS } from './sdk.js';
 
 export const loadCSS = () => {
   const css = document.createElement('style');