Add combat minigame

[rj-lee]

• Split actions.py into separate files, it was getting massive
• I don't 100% like all the code here, it's getting more complicated so if we have another major feature this is due for a refactor to split things up
• A main issue with the current state of the minigame is that you can start towards the end of the duration and score 100% on just the last arrow, I'm not sure what's the best way to handle that
• I have another idea once the above issue is fixed, what if scoring 100% gave you a much bigger bonus, such as insta-wiping the enemy army? We can of course make the game much harder to score perfectly or reduce the bonus

[TheRedPanda17]

For feature parity, the number of keys should change between 3-4.

[rj-lee]

While testing I realized that a textual version later than 0.32.0 made minigames really laggy, so that's something to note when considering upgrading dependencies in the future