refactor: use subclasses for different item types

src/item/armor/armor.ts

@@ -0,0 +1,11 @@
+// SPDX-FileCopyrightText: 2022 Johannes Loher
+//
+// SPDX-License-Identifier: MIT
+
+import { DS4Item } from "../item";
+
+export class DS4Armor extends DS4Item {}
+
+export interface DS4Armor {
+    data: foundry.data.ItemData & { type: "armor"; _source: { type: "armor" } };
+}