* initial working version of darwinkit rewrite

* fix panic on methods returning slices

* helper/action: fix incorrect type in Handler

* update examples and widgets helper that use the action helper

* generate: pull modules out of typing into modules package. add enumexport tool

* generate: enumexport tool and initial dump

* generate: add vision and coreml, improve enumexport coverage

* generate: make sure all generated files have .gen.go and give up potential to generate structs. plus misc fixes

* generate: cleanup output

* generate: improved enumexport coverage and integrated with oldgen for now

* test: made a simple internal assert to replace testify

* Makefile: download symbols.zip

* generate: allow deprecated values in enumexport, and re-export

* generate: now generating all constants and enums from symbols db

* ¯\_(ツ)_/¯

* clearing out for darwinkit

* ffi: remove unused reference to FFI_BAD_ARGTYPE which doesn't exist everywhere

* README: add back macdriver.gif for now

* examples: add screenshots back and update use of objc