Add Emacs Podcast (#4828)

Co-authored-by: sarit <sarit.pinhas@duda.co>

free-podcasts-screencasts-en.md

@@ -93,6 +93,7 @@
 
 ### Emacs
 
+* [Emacs Cast](https://emacscast.org) - Rakhim Davletkaliyev (podcast)
 * [Emacs Rocks!](http://emacsrocks.com) (screencast)