Begin work on the most basic item sheet version

module/apps/GenericItemSheet.mjs

@@ -0,0 +1,47 @@
+import { __ID__, filePath } from "../consts.mjs";
+
+const { HandlebarsApplicationMixin } = foundry.applications.api;
+const { ItemSheetV2 } = foundry.applications.sheets;
+
+export class GenericItemSheet extends HandlebarsApplicationMixin(ItemSheetV2) {
+	// #region Options
+	static DEFAULT_OPTIONS = {
+		classes: [
+			__ID__,
+			`GenericItemSheet`,
+		],
+		position: {
+			width: 400,
+			height: 450,
+		},
+		window: {
+			resizable: true,
+		},
+		form: {
+			submitOnChange: true,
+			closeOnSubmit: false,
+		},
+		actions: {},
+	};
+
+	static PARTS = {
+		header: { template: filePath(`templates/GenericItemSheet/header.hbs`) },
+		content: { template: filePath(`templates/GenericItemSheet/content.hbs`) },
+	};
+	// #endregion Options
+
+	// #region Instance Data
+	// #endregion Instance Data
+
+	// #region Lifecycle
+	async _prepareContext(partID) {
+		return {
+			item: this.item,
+			system: this.item.system,
+		};
+	};
+	// #endregion Lifecycle
+
+	// #region Actions
+	// #endregion Actions
+};