Add ObjectStoreLite to reduce memory footprint if the full object data is not needed

lib/classes/interfaces/IGameObject.ts

@@ -0,0 +1,5 @@
+export interface IGameObject
+{
+    hasNameValueEntry(key: string): boolean;
+    getNameValueEntry(key: string): string;
+}

lib/classes/interfaces/IObjectStore.ts

@@ -0,0 +1,7 @@
+import {IGameObject} from './IGameObject';
+
+export interface IObjectStore
+{
+    getObjectsByParent(parentID: number): IGameObject[];
+    shutdown(): void;
+}