Added InputManager.cpp and InputManager.h in Source/util/input/

Signed-off-by: martingronlund <martingronlund@live.se>
bla

Signed-off-by: Peter Mårtensson <veritas.is.me@gmail.com>
Merge remote-tracking branch 'remotes/origin/Input' into rewrite
Refracktor

Signed-off-by: Peter Mårtensson <veritas.is.me@gmail.com>