[NEW COURSE] Added Material UI courses (#11565)

* [NEW COURSE] Added Material UI courses

Added links to free resources for learning Material UI

* [NEW COURSE] Added Material UI courses

Added new courses on Material UI. Previously, the edit I made wasn't in alphabetical order. Fixed the issue this time

* Update free-courses-hi.md

* Update free-courses-hi.md

Filtered the collection to contain only playlists from YouTube.

courses/free-courses-hi.md

@@ -30,6 +30,7 @@
 * [Golang](#golang)
 * [HTML and CSS](#html-and-css)
     * [Bootstrap](#bootstrap)
+    * [Material UI](#material-ui)
     * [Tailwind CSS](#tailwind-css)
 * [iOS](#ios)
 * [Java](#java)
@@ -410,6 +411,12 @@
 * [Bootstrap Tutorial in Hindi With 2 Projects for Beginners \| Complete Bootstrap 5 Tutorial in Hindi](https://youtube.com/watch?v=QE5oQh63gGE) - Tech Gun
 
 
+#### Material UI
+
+* [Material UI Tutorial for Beginners in Hindi](https://www.youtube.com/playlist?list=PL8u9CiaEfFDaR0ipsKfHdnZccTm10J7-3) - Basics Adda
+* [Reactjs material ui in hindi](https://www.youtube.com/playlist?list=PL8p2I9GklV4722H3_nosmpdjNXIPuBUXm) - Code Step By Step
+
+
 #### Tailwind CSS
 
 * [Learn Tailwind CSS with Projects - Hindi](https://www.youtube.com/playlist?list=PLPppPPmk0i3h9Xs6cAknE9OODTqZD5zFe) - Do Some Coding