add go modules and their usage (#2127)

* add go modules and their usage

* Update content/roadmaps/109-golang/content/101-go-advanced/100-go-modules.md

* Update content/roadmaps/109-golang/content/101-go-advanced/100-go-modules.md

Co-authored-by: Matteo Bruno <satboy78@MacBook-Pro-Matteo.local>
Co-authored-by: Kamran Ahmed <kamranahmed.se@gmail.com>

content/roadmaps/109-golang/content/101-go-advanced/100-go-modules.md

@@ -1 +1,8 @@
-# Go modules
+# Modules
+
+Go code is grouped into packages, and packages are grouped into modules. Your module specifies dependencies needed to run your code, including the Go version and the set of other modules it requires.
+
+<ResourceGroupTitle>Free Content</ResourceGroupTitle>
+<BadgeLink colorScheme='yellow' badgeText='Read' href='https://go.dev/doc/tutorial/create-module'>How to create a module in Go</BadgeLink>
+<BadgeLink colorScheme='yellow' badgeText='Read' href='https://go.dev/blog/using-go-modules'>How to use modules in Go</BadgeLink>
+<BadgeLink colorScheme='yellow' badgeText='Read' href='https://jfrog.com/blog/converting-projects-for-go-modules/'>How to modify existing projects to use Go modules</BadgeLink>