Added jump with gravity component

Closes #8 (closed)

model/src/main/kotlin/tdt4240/netrunner/model/game/components/dynamic/GravityComponent.kt

@@ -7,7 +7,10 @@ import tdt4240.netrunner.model.util.Vec2f
 class GravityComponent(val gravSpeed: Vec2f = Vec2f(0f, GRAVITY)) : Component {
     override val componentName: String = this::class.java.name
 
+
+
     companion object {
-        const val GRAVITY = 9.81f
+        const val GRAVITY = -700.0f
+        //TODO:
     }
 }
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