Implementing attack behaviour for enemies & player

[SimoneRizzuto]

Implemented attacks for the player & the enemies

[SimoneRizzuto]

Almost done with this, I need to do some last few things:

• [ ] Add animations for attacking up & down
• [ ] Add attack buffering
• [ ] Adjust logic so when walking diagonally up or down, it will always do the upward attack
  • [ ] With this, make sure controller and keyboard are supported by implemented the Direction changing for each 45 degree angle the player can walk
• [ ] Clean up logic