Add "Podcasts" section

[newswim]

There are not many Haskell-specific podcasts that are currently airing new episodes, however there are quite a few dedicated to the larger FP community. I wonder if there is interest in adding these? Here are some candidates . .

Haskell-only

• The Haskell Cast

Non-Haskell, but FP, CT, ST, TT, NLP, etc.

• Type Theory Podcast
• Functional Geekery
• Magic Read Along
• Cognicast

There's also a website called fpCasts which serves as a kind of aggregator. Dozens of episodes will also pop-up if you filter the more popular software engineering podcasts for 'haskell', 'functional programming', etc.

[Gabriella439]

I think I'd prefer to link to podcast episodes related to specific topics from the tutorial. If you have any episodes you'd like to highlight we can add them