feat: Allow using GameCondition in EntityVehicleCondition and EntityPassengerCondition

[sylv256]

I've already found this annoying enough having to implement a RetypedCondition bodge, so this would be much appreciated.

[sylv256]

I'm thinking of messing with InvertedCondition so that it's easier to use without retyping.

[sylv256]

I'm going to make a special Either codec that allows usage of either GameCondition or TypedGameCondition.

[sylv256]

Upon further investigation, this introduced unnecessary amounts of boilerplate. Instead, we're going to find alternative avenues of simplification. I believe the easiest way here would be to merged TypedGameCondition and GameCondition. However, that would present further challenges with regards to Codecs, so the best compromise would be to keep the current system of retyping for the time being.