Add dapper docs (#3162)

* Update 101-dapper.md

Adding introduction and useful links.

* Update content/roadmaps/116-aspnet-core/content/104-orm/101-dapper.md

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

content/roadmaps/116-aspnet-core/content/104-orm/101-dapper.md

@@ -1 +1,10 @@
-# Dapper
+# Dapper
+
+Dapper is a lightweight object-relational mapper (ORM) for the .NET framework. It is designed to provide fast and simple access to data stored in a database, by mapping the data to objects in the application.
+
+Dapper helps you to write efficient and concise code for interacting with databases, without the need for a full-featured ORM like Entity Framework. It provides a set of extension methods for the IDbConnection interface, which you can use to execute SQL queries and map the results to strongly-typed objects.
+
+To learn more about Dapper, you can visit the following links:
+
+- [The official Dapper website](https://github.com/StackExchange/Dapper)
+- [The Dapper Documentation](https://dapper-tutorial.net)