New resources (#7265)

* Kotlin book added

A downloadable kotlin book resource added.

* Kotlin hindi resource added

Added a complete kotlin programming video resource in hindi.

* lines swapped

* lines swapped for 2nd time

* lines swapped 3rd time

* lines swapped last time

* remove non acceptable content by copyright

* Revert space

* Fragment ids goes in lowercase

* improving kotlin resource info

Co-authored-by: David Ordás <3125580+davorpa@users.noreply.github.com>

courses/free-courses-hi.md

@@ -18,6 +18,7 @@
     * [Next.js](#nextjs)
     * [Node.js](#nodejs)
     * [React](#react)
+* [Kotlin](#kotlin)
 * [Machine Learning](#machine-learning)
 * [PHP](#php)
 * [Python](#python)
@@ -191,6 +192,11 @@
 * [ReactJS Tutorials for Beginners In Hindi](https://www.youtube.com/playlist?list=PLUVqY59GNZQNTlOnGne0G7DXnmi7CeOtc) - Pradeep Maurya
 
 
+### Kotlin
+
+* [Kotlin Programming Complete in one Video (Hindi)](https://www.youtube.com/watch?v=uoP4JKHgzDE) - Geeky Shows, `tch.:` Rajesh Kumar
+
+
 ### Machine Learning
 
 * [Machine Learning Full Course](https://www.youtube.com/watch?v=IoZGSQ07e8g) - Bharani Akella, Great Learning (YouTube)