Add base skeleton

moneymgr_mobile/lib/utils/hooks.dart

@@ -0,0 +1,19 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_hooks/flutter_hooks.dart';
+
+typedef AsyncTask = ({
+ValueNotifier<Future<void>?> pending,
+AsyncSnapshot<void> snapshot,
+bool hasError,
+});
+
+/// Creates a hook that provides a [snapshot] of the current asynchronous task passed
+/// to [pending] and a [hasError] value.
+AsyncTask useAsyncTask() {
+  final pending = useState<Future<void>?>(null);
+  final snapshot = useFuture(pending.value);
+  final hasError =
+      snapshot.hasError && snapshot.connectionState != ConnectionState.waiting;
+
+  return (pending: pending, snapshot: snapshot, hasError: hasError);
+}