doc(arch): add fully featured example

packages/wyatt_architecture/example/lib/presentation/shared/widgets/bottom_loader.dart

@@ -0,0 +1,30 @@
+// Copyright (C) 2022 WYATT GROUP
+// Please see the AUTHORS file for details.
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program. If not, see <https://www.gnu.org/licenses/>.
+
+import 'package:flutter/material.dart';
+
+class BottomLoader extends StatelessWidget {
+  const BottomLoader({super.key});
+
+  @override
+  Widget build(BuildContext context) => const Center(
+        child: SizedBox(
+          height: 24,
+          width: 24,
+          child: CircularProgressIndicator(strokeWidth: 1.5),
+        ),
+      );
+}