Crooked house excitement

Computes excitement, nausea, intensity, and upkeep cost for a crooked house ride. This was the simplest one I could find but I'm discouraged by the number of unknown ride variables I discovered that play a part. Stepping through a debugger and inspecting these values at runtime for different rides would be very useful.

Note, to actually get to the point where we could call this from C we'd have to decompile a few other large functions:

- sub_6B5A2A
- sub_68E328 (contains a ton, ton of subroutine calls)
(which is called by something which IDA couldn't even analyze near 0x4065EF)

So I haven't run this yet, though it does build properly.