Bubbles collision events to RaceLogic

- ColliderRegistry collects and forwards all Collision events
- RaceLogic observes the ColliderRegistry of its single Race instance

#story[1100]

racevisionGame/src/main/java/shared/model/Boat.java

@@ -401,6 +401,5 @@ public class Boat extends Collider {
 
     @Override
     public void onCollisionEnter(Collision e) {
-        System.out.println(e.getBearing().degrees());
     }
 }

racevisionGame/src/main/java/shared/model/Mark.java

@@ -86,9 +86,5 @@ public class Mark extends Collider {
 
     @Override
     public void onCollisionEnter(Collision e) {
-        if(e.getBearing().degrees() == 0) System.out.println("Ahead");
-        else if(e.getBearing().degrees() < 90) System.out.println("Starboard");
-        else if(e.getBearing().degrees() > 270) System.out.println("Port");
-        else System.out.println("Behind");
     }
 }