Work started

-Added class for LifeGame
-Added unit test for class
-Added methods to seed and wipe life on game grid
-Added method to check is life exists in grid cell
-Added method to check cell surroundings

Change-Id: I9875c2cf8bce4c6747159f96f02ad3026e00a34c
Signed-off-by: Vasiliy Altunin <skyr@users.sourceforge.net>