Initial data model migration

modules/applications/sheets/mutation-sheet.mjs

@@ -0,0 +1,21 @@
+import HawkmoonItemSheet from "./base-item-sheet.mjs"
+
+export default class HawkmoonMutationSheet extends HawkmoonItemSheet {
+  /** @override */
+  static DEFAULT_OPTIONS = {
+    classes: ["mutation"],
+    position: {
+      width: 620,
+    },
+    window: {
+      contentClasses: ["mutation-content"],
+    },
+  }
+
+  /** @override */
+  static PARTS = {
+    main: {
+      template: "systems/fvtt-hawkmoon-cyd/templates/item-mutation-sheet.hbs",
+    },
+  }
+}