0.2.3 Classic & Coop mode!

2 New Modes For Asteroids!!

-added a classic mode to asteroids
-->asteroids spawn and go a random position and don't follow the player
-->bigger asteroids will split into 2 asteroids
-->player gets destroyed and respawns for each life instead of just getting hit

-added a coop mode to asteroids
-->2 players that work together to get the most points
-->the game will only be over if all players have lost their lives
-->the same mechanics as classic mode

-added a new scoring system for the classic & coop mode
-->mini asteroids: 750 points
-->small asteroids: 500 points
-->medium asteroids: 400 points
-->medium-big asteroids: 200 points
-->big asteroids: 100 points
-->large asteroids: 50 points

-added a menu for asteroids
-->you can choose between AI, Classic, and Coop mode