Implement mixed Codenames

[banool]

On page 11 of the Codenames Pictures rules they talk about a game variant where you can combine Codenames and Codenames Pictures if you have them both. That could be interesting to do and a fun little project.

It would require some reasonably hefty work, I purposely used the pre-existing code structure. It was easier and much simpler to just use image paths in place of words. Implementing images alongside words would've become messy without some proper digging / refactoring.