various improvements for shopping line item dialog

vue3/src/utils/utils.ts

@@ -0,0 +1,18 @@
+/**
+ * Gets a nested property of an object given a dot-notation path.
+ *
+ * @param object The object to access the property from.
+ * @param path The dot-notation path to the property.
+ * @returns The value of the nested property, or `undefined` if not found.
+ */
+export function getNestedProperty(object: any, path: string): any {
+  const pathParts = path.split('.');
+
+  return pathParts.reduce((obj, key) => {
+    if (obj && typeof obj === 'object') {
+      return obj[key]
+    } else {
+      return undefined;
+    }
+  }, object);
+}