Repared various bugs:
-sometimes the camera acted weird when it was overlaping both vertical and horizontal limits
-stopped setting the velocity to repair chars jumping on the level limit bug
- MoveToPosition from rigid body added a velocity to the player when colliding, sometimes it lasted until it collided again
- when changing direction the attack sometimes didnt counted

Added:
-The camera now has a vertical limit to stop showing the floor as half of the screen
- We can now add more spritesheets
- We can use the attack animations
- The instantiate player now requires more parametters (dont know if we should consider putting that info somewhere else)
-player now has character id due to various spritesheets