Added AWS Web App Firewall integration

Now you can use AWS WAF & Barricade together to make an intelligent and learning firewall.

https://docs.barricade.io/src/img/using-barricade/15-awswaf.png

You’ll find a new section in the app to add the integration here, which will add a simple ‘Add to Firewall’ button to security cases that we detect. 

https://docs.barricade.io/src/img/using-barricade/15-awswaf-08.png

For more details on using the integration, see our documentation, or check out our blog announcement - or just go ahead and try it out for yourself.