Animations/Oxygen(HashMap)/Maskizer/OxygenBar/Camera

- Added a few animations
- You are now able to swap the used sprite for an animation by changing
the HashMap, you make a local variable HashMap that you are able to
change whenever, that meant, however, that you had to carry the HashMap
as property for each of the methods you are using
- Maskizer is done!
- OxygenBar now disappears when !isMaskOn
- Camera has been adjusted in order to follow player, it is of default