Unifies the approach between iOS and macOS. By copying the Info.plist
to the build directory, we also open up the possibility to modify it,
which we can't do when CMake does the copy during its generator step.
Change-Id: I59f9f69ac368166bb26d8a5c57bf4ea3f503d51b
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
