Extract additional platform-specific imports to basic compatibility
header.

Properly declare shims for macOS.

Configure environment for Linux.

Server runs ok, the game runs but with no window...

Add capability to log outside stderr and stdout.

Unify variables across the project.

Fix CMake lib dependencies for crypto/SSL. Also ensure websockets work on macOS for both client and server.

Come up with our own logging system.

Tidy up CMake.

Also provide abstraction to fopen_s only available to Windows.