The missing registerClassPair function is required to register a class and make it active with objc after allocating with the existing allocateClassPair function.
* Add CGFloat, CGPoint, CGSize, CGRect
* Add WindowCollectionBehavior, WindowLevel, and WindowTabbingMode
* Change EventMask to ulong to match the objc unsigned long long
* Change int types to NS(U)Integer types to match objc
* Add core foundation tests
* Add objc tests
* Add darwin conditional to the test files
* Change enums to const inline to better match the NSEvent.h api.
Update the EventMask helper function to match the NSEvent.h api:
event_type_from -> event_mask_from_type.
* Update the release notes
* Deprecate original objc enums and replace with const inline enums backed with NS numerical types.
Rename the new objc enums with an NS prefix.
Update unit tests to account for new NS prefixed enums.
Add states item length constants to core_foundation.
Status item lengths don't really belong in either file, but as they are
dependant on CGFloat it made sense to move them to the same module.
Update release notes.
* Some tweaks
---------
Co-authored-by: Christoffer Lerno <christoffer@aegik.com>
