[ffigen] Handle ObjC nullable annotations (#624)

* Fix #334

* Fix analysis

* fix swift test

* Fix tests

* Fix nullability bug

* Fix formatting

* Fix linker error

* Fix static methods bug

* fix objective_c_example_test
15 files changed
tree: 75008924f230004a71a8a866681a82c713a43f90
  1. pkgs/