Resources added for Nodejs Modules (#1610)

* Resources added for Nodejs Modules

* Update content/roadmaps/107-nodejs/content/101-nodejs-modules/101-custom-modules.md

Co-authored-by: Kamran Ahmed <kamranahmed.se@gmail.com>

content/roadmaps/107-nodejs/content/101-nodejs-modules/101-custom-modules.md

@@ -1 +1,9 @@
-# Custom modules
+# Custom Modules
+
+Modules are the collection of JavaScript codes in a separate logical file that can be used in external applications based on their related functionality. There are two ways to create modules in Node.js i.e. either via CommonJS or ESM.
+
+<ResourceGroupTitle>Free Content</ResourceGroupTitle>
+<BadgeLink badgeText='Read' colorScheme="yellow" href='https://www.geeksforgeeks.org/how-to-create-modules-in-node-js/'>How to Create Modules in Node.js ?</BadgeLink>
+<BadgeLink badgeText='Watch' href='https://www.youtube.com/watch?v=Cxo4UKpHv5s'>Creating a Module in Node.js</BadgeLink>
+<BadgeLink badgeText='Read' colorScheme="yellow" href='https://blog.logrocket.com/commonjs-vs-es-modules-node-js/'>CommonJS vs ESM in Node.js</BadgeLink>
+<BadgeLink badgeText='Read' colorScheme="yellow" href='https://reflectoring.io/nodejs-modules-imports/'>Modules and Imports in Node.js</BadgeLink>