games/fakesteak: Add new port

Implementation of the digital character rain as seen in "The Matrix".

Some things you might like about fakesteak:

  * Small footprint (low on RAM and disk usage)
  * Good performance (low on CPU usage)
  * Looks pretty close to the original (fading, glitches)
  * Basic customization via command line options
  * No dependencies (not even ncurses)