improve effects type checking

src/module/actor/actor.ts

@@ -1,10 +1,12 @@
+import { DS4Item } from "../item/item";
+import { DS4ItemDataType } from "../item/item-data";
 import { DS4ActorDataType } from "./actor-data";
 
 /**
  * Extend the base Actor entity by defining a custom roll data structure which is ideal for the Simple system.
  * @extends {Actor}
  */
-export class DS4Actor extends Actor<DS4ActorDataType> {
+export class DS4Actor extends Actor<DS4ActorDataType, DS4ItemDataType, DS4Item> {
     /** @override */
     prepareDerivedData(): void {
         const data = this.data;