add date label as argument

example/lib/example_pages/date_page.dart

@@ -40,7 +40,7 @@ class _DatePageState extends State<DatePage> {
                 const Duration(days: 7),
               ),
             ),
-            label: const Text("Date"),
+            label: const Text("Custom date label"),
             controller: widget.dateController,
           ),
         ),

lib/src/widgets/input/input_types/input_date_picker/input_date_picker.dart

@@ -51,6 +51,7 @@ class FlutterFormInputDateTime extends FlutterFormInputWidget {
     super.registerController(context);
 
     return DateTimeInputField(
+      label: label,
       firstDate: firstDate,
       lastDate: lastDate,
       inputType: inputType,