add ` & {[key:string]:any}` to `NPC`-definition

sugarcube/src/interfaces.d.ts

@@ -855,7 +855,7 @@ declare global {
 		openTimes?:TimespanIdentifier;
 	}
 
-	export type NPC = NPCAccessor & Character;
+	export type NPC = NPCAccessor & Character & {[key:string]:any};
 
 	export interface NPCActivity{
 		location:string;