folder restructuring

lib/widget/focus_behaviour.dart

@@ -0,0 +1,7 @@
+import 'package:flutter/cupertino.dart';
+
+class FocusBehaviour {
+  static void textFieldTapOutside(BuildContext context) {
+    FocusScope.of(context).requestFocus(FocusNode());
+  }
+}