Animation Sync and Minor modifications

Done:
- animation sync of minion
- animation sync of hero (attack animation to be modified)
- champion attack with attack delay
- minions can keep pushing to the final destination
- fix base healing minor bug
- change the camera view to pure first person view, just to try its
gameplay effect

Bugs Report:
- when second player joins, the bases are set to both 0
- minions get stuck near the turrets of the top and bottom lanes, maybe
because of the lane height
- when mouse clicked and not released, the champion keeps playing the
animation