Covid Blaster (jomarch22)

Modified 2D Shooter Game: Covid Blaster - Changed overall theme from space shooter to urban shooter to beat COVID - Made new game sprites (player and enemy) & sourced other art for game from free, online sources - Changed behaviors to allow: 1. Random firing from multiple guns (COVID boss in second level) 2. Enable scrolling 3. Allow enemies (level 2) to be vaccinated (by player) or infected (by COVID)