docs: added examples for modules usage in Medusa (#5753)

* Add data migration script after running migrations

* Update install-medusa.mdx

* Update examples.md (#5751)

* fix lint errors

* fix comment in example

* added examples for modules usage in Medusa

---------

Co-authored-by: Riqwan Thamir <rmthamir@gmail.com>

www/apps/docs/sidebars.js

@@ -2751,6 +2751,11 @@ module.exports = {
           label: "Install in Node.js",
           id: "experimental/product/install-nodejs",
         },
+        {
+          type: "doc",
+          label: "Examples",
+          id: "experimental/product/examples",
+        },
         {
           type: "html",
           value: "References",