Move the Aspect data model into it's appropriate location

module/models/Item/Aspect.mjs

@@ -0,0 +1,11 @@
+export class AspectItemData extends foundry.abstract.TypeDataModel {
+	static defineSchema() {
+		const fields = foundry.data.fields;
+		return {
+			used: new fields.BooleanField({ initial: false }),
+			/** The number of seconds that the effect of the aspect stays */
+			deactivateAfter: new fields.NumberField({ nullable: true }),
+			info: new fields.HTMLField({ nullable: true, blank: false, trim: true }),
+		};
+	};
+};