Sonar codemod(s) for CSRF protections #476

https://rules.sonarsource.com/python/RSPEC-4502/?search=Make%20sure%20disabling%20CSRF%20protection%20i
This sonar rule accounts for checks on both flask and Django and their various ways CSRF may be enabled or disabled.

At this time we have one related find-and-fix codemod flask-enable-csrf-protection which may map to this sonar rule. However, we'd likely want to implement more codemods to align with this sonar rule.