Use alias functions from Lego3DManager (#1167)

* Mark LegoEntity:Destroy (many vtables use it)

* Starting addrs for Lego3DManager helpers

* Addrs for users of Lego3DManager and changes where needed

LEGO1/lego/sources/3dmanager/lego3dview.h

@@ -46,6 +46,7 @@ private:
 //
 // Lego3DView implementation
 
+// FUNCTION: BETA10 0x100576b0
 inline ViewManager* Lego3DView::GetViewManager()
 {
 	return m_pViewManager;