Public Methods not public in Verification and Stubbing Proxies

[AnthonyMillerSF]

I am generating mocks and dropping them in a separate target from my unit tests (so they can be shared among multiple test targets).
The generated functions on __VerificationProxy and __StubbingProxy objects should have the same access modifier as the original function so that I can call them in my unit tests.

My current workaround is to @testable import MyMocksLib but I shouldn't need to use @testable I think.

Thanks :)

[TadeasKriz]

That's a good catch, probably forgotten in the template.

[TadeasKriz]

This is a great starter PR for anyone who'd like to contribute.