add new assets icon and logo

motula_translate_app/lib/screens/onboding/components/sign_in_dialog.dart

@@ -77,7 +77,7 @@ void showCustomDialog(BuildContext context, {required ValueChanged onValue}) {
                       const Padding(
                         padding: EdgeInsets.symmetric(vertical: 24),
                         child: Text(
-                          "Registrati con un indirizzo email valido, è gratuito.",
+                          "Registrati con un indirizzo email valido. È gratuito.",
                           style: TextStyle(color: Colors.black54),
                         ),
                       ),

motula_translate_app/lib/screens/onboding/onboding_screen.dart

@@ -1,6 +1,8 @@
 import 'dart:ui';
 
+import 'package:flutter/cupertino.dart';
 import 'package:flutter/material.dart';
+import 'package:flutter/widgets.dart';
 import 'package:rive/rive.dart';
 
 import 'components/animated_btn.dart';
@@ -81,6 +83,9 @@ class _OnbodingScreenState extends State<OnbodingScreen> {
                             ),
                           ),
                           SizedBox(height: 16),
+                          Image(
+                              image: AssetImage('assets/Logo/Logo.png'),
+                          ),
                           Text(
                             "Ideato e creato da: Kagir, Ken ",
                           ),