chore(ui): creating a playground for the new components (#4301)

Co-authored-by: Dan Rukas <dan.rukas@gmail.com>

platform/ui-next/.webpack/template.html

@@ -0,0 +1,17 @@
+<!doctype html>
+<html lang="en">
+  <head>
+    <meta charset="UTF-8" />
+    <meta
+      name="viewport"
+      content="width=device-width, initial-scale=1.0"
+    />
+    <title><%= htmlWebpackPlugin.options.title %></title>
+  </head>
+  <body class="bg-gray-100">
+    <div
+      id="root"
+      class="min-h-screen"
+    ></div>
+  </body>
+</html>