Initial (redacted) commit.

app/lib/infrastructure/widget_wall/add_widget_button.dart

@@ -0,0 +1,27 @@
+import 'package:flutter/material.dart';
+import 'package:habitrack_app/infrastructure/widget_wall/add_widget_menu.dart';
+
+class AddWidgetButton extends StatelessWidget {
+  const AddWidgetButton({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    return OutlinedButton(
+      style: OutlinedButton.styleFrom(
+        backgroundColor: Theme.of(context).colorScheme.primary,
+      ),
+      onPressed: () => {
+        Navigator.push(
+          context,
+          MaterialPageRoute<dynamic>(
+            builder: (context) => const AddWidgetMenu(),
+          ),
+        ),
+      },
+      child: Icon(
+        Icons.add,
+        color: Theme.of(context).colorScheme.onPrimary,
+      ),
+    );
+  }
+}