Add Arabic podcasts (#5368)

README.md

@@ -111,6 +111,7 @@ Please read [CONTRIBUTING](/CONTRIBUTING.md). If you're new to GitHub, [welcome]
 
 Free Podcasts and Screencasts:
 
++ [Arabic / al arabiya / العربية](casts/free-podcasts-screencasts-ar.md)
 + [Czech / čeština / český jazyk](casts/free-podcasts-screencasts-cs.md)
 + [English](casts/free-podcasts-screencasts-en.md)
 + [Finnish / Suomi](casts/free-podcasts-screencasts-fi.md)

casts/free-podcasts-screencasts-ar.md

+### Index
+
+* [Miscellaneous](#miscellaneous)
+
+
+### Miscellaneous
+
+* [null++: بالعربي](https://nullplus.plus) - Mohamed Luay & Ahmad Alfy (podcast)
+* [The Egyptian Guy](https://anchor.fm/refaie) - Mohamed Refaie (podcast)