Add new patch to automatically add tracing spans to stock events

[Phantomical]

When looking at KSP within the unity profiler the event handlers are completely invisible. This is a shame, because a lot of frame hangs or stutter happen because an event was fired and event handlers end up running unnecessarily.

This commit introduces a new disabled-by-default patch that automatically adds two sets of profiler spans every time the event is fired:

• One wraps the whole event and contains the event name
• We wrap each individual function call with another span that contains the full name (i.e. typename.methodname) of the method being called.

That way you can see right away which events and and which callback specifically are slow.

Actually implementing this is a bit messy. EventVoid is easy, it can just use a regular harmony patch, but the remaining EventData types are all generics. Patching generics in general is difficult. You lose class type parameters and you need to separately patch each instantiation for value type parameters.

Making this actually work in practice for stock is somewhat involved

• We declare Fire0 through Fire4. These are instantiated with the actual type parameters dynamically are basically just a copy-paste of the stock event handling code with the extra spans added.
• We declare EventDataN_Fire_Override variants, these are the calls that actually get patched into the resulting method. Their generic parameters will match for value types but not for class types. These assign the arguments to an array and use reflection to call the correct FireN overload.
• At patch time we dynamically construct a new lambda that calls into the appropriate EventDataN_Fire_Override call. Harmony does not support using generic methods for patches so we use runtime generation instead. Using LambdaExpression.Compile does not result in a method with the right signature, so we instead directly use Reflection.Emit and LambdaExpression.CompileToMethod to create the method we need.

We then apply the appropriate patch for every known EventData instantiation in the stock game. If there are important events in mods that use known types then we can add those at a later date.

Here's an example of what the profiling spans look like with this patch enabled