add: some modles
chg: added an output from top side
add: controlflow
chg: added interface for upcoming content flow
chg: function pointer array for program execution

Added function pointer array for execution of the animations. An ending
program returns 1 which will be added to the ruuning counter. Max
counter goes to Array limit then start again at zero.
chg: complete implemtation of animation
chg: improved implemtation of animation

moved definition for function pointer from main file to animation file.
added a new function for flow control (top value is where animation is
completed, chang value is where tmp counting is changed from postive to
negative)
Merge branch 'animation-rteichl' of github.com:rtreichl/led_cube into animation-rteichl