Swift <-> Cxx interop sample

This repo showcases a minimalist setup to C++ <-> Swift interop.

Requirements:

• LLVM & Swift have to be installed on your system
• "swiftc" command has to be accessible from the terminal
  • Everything else will be deduced using "where swiftc" (version and other paths)

Todo:

• Move dependencies to a 3rdparty subdirectory & strip out unnecessary stuff
• Add more tests to document basic interop rules