Component Messaging Rework (#36)

* Remove DiscoBall.

* Changes `IEntity.AddComponent(IComponent)` to `IEntity.AddComponent<T>`.

* Pulled ComponentManager registration out of Component into Entity.

* Killed component message params.

* Updated engine submodule.

Resources/Prototypes/Entities/discoball.yml

@@ -1,22 +0,0 @@
-- type: entity
-  name: Disco Ball
-  id: discoball
-  class: Content.Client.Prototypes.DiscoBall
-  components:
-  - type: Transform
-  - type: Sprite
-    sprites:
-    - wall_light
-
-  - type: Icon
-    icon: wall_light
-
-  - type: PointLight
-
-- type: entity
-  name: Disco Ball Small Edition
-  id: discoballsmall
-  parent: discoball
-  components:
-  - type: PointLight
-    radius: 128