objc macros are fairly heavy in terms of generated code. Should they be used?

[kettle11]

The events_mac file expands with cargo expand to ~3300 lines due to macros when the non-expanded version is ~660 lines.

I partially began a transition away from using the objc macros in 0d96c59 however I did not fully complete the transition. The partial reduction of the macro shaved ~6% off the build time.

However I'm now having second thoughts. Now to use new classes and selectors code must be declared in multiple additional places instead of one macro that handles it all. It makes kapp's code base aesthetically a bit messier and adds a little friction to implementing new changes.