System information (version)

• OpenCV => latest
• Operating System / Platform => iOS/macOS
• Compiler => Xcode

Detailed description

On Android the Java wrapper gives us every easy access to OpenCV APIs however on iOS it is a lot of work to build custom Objective-C/Swift wrappers around the C++ library.
Solve this by adding an Objective/Swift wrapper generator similar to the Java wrapper generator.

(I have a pull-request I would like to contribute for this)