[Process] Added Windows version of Process.
[Process] Added Windows version of Process.

- Only lightly tested.
- Always readable and writable at the moment.
- Maybe Unix should always be readable and writable?
- Generated C++ supports Process for both Mac/Linux and Windows via conditional compilation.

Plasmaworks/Rogue,Plasmaworks/Rogue,Plasmaworks/Rogue,AbePralle/Rogue,AbePralle/Rogue,Plasmaworks/Rogue