Create swedish podcast section (#2127)

* Create swedish podcast section

Add Kodsnack podcast

* Formatting

* Line breaks

free-podcasts-screencasts-se.md

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+### Index
+
+* [Language Agnostic](#language-agnostic)
+
+
+### Language Agnostic
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+* [Podcast] - [Kodsnack](http://kodsnack.se)