Use ICleanupStrategy as really strategy

[rapushka]

not as just marker

i.e

	[PublicAPI]
	public interface ICleanup<TStrategy> where TStrategy : ICleanupStrategy { }

	public interface ICleanupStrategy 
	{
		void OnCleanup(Entity<TScope> entity);
	}

	public class RemoveComponent : ICleanupStrategy
	{
		public void OnCleanup(Entity<TScope> entity)
		{
			if (entity.Has<TComponent>())
				entity.Remove<TComponent>();
		}
	}

	public class DestroyEntity : ICleanupStrategy
	{
		public void OnCleanup(Entity<TScope> entity)
		{
			entity.Destroy();
		}
	}

❗ problem: from where take the scope of the entity and the component?