Change all app architecture

lib/screens/sign_in_screen.dart

@@ -0,0 +1,85 @@
+import 'package:flutter/material.dart';
+import 'file:///D:/AndroidStudioProjects/astronote_app/lib/widgets/footer_sign_in_widget.dart';
+
+import 'file:///D:/AndroidStudioProjects/astronote_app/lib/widgets/form_sign_in_widget.dart';
+import 'package:astronote_app/widgets/header_sign__in_widget.dart';
+
+class LoginScreen extends StatefulWidget {
+  @override
+  _LoginScreenState createState() => _LoginScreenState();
+}
+
+class _LoginScreenState extends State<LoginScreen> {
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      body: Container(
+//        width: double.infinity,
+        child: SingleChildScrollView(
+          padding: EdgeInsets.only(
+              left: MediaQuery.of(context).size.height * 0.07,
+              right: MediaQuery.of(context).size.height * 0.07),
+//          scrollDirection: Axis.vertical,
+          child: Column(
+            children: <Widget>[
+              HeaderLogWidget(),
+              SizedBox(height: MediaQuery.of(context).size.height * 0.08),
+              FormLogWidget(),
+              SizedBox(height: MediaQuery.of(context).size.height * 0.08),
+              FooterLogWidget(),
+              SizedBox(height: MediaQuery.of(context).size.height * 0.05),
+            ],
+          ),
+        ),
+      ),
+    );
+  }
+
+//  Widget _enDIUrl() {
+//    return InkWell(
+//      onTap: _enDIUrl,
+//      child: Text(
+//        "En collaboration avec enDI",
+//        style: style.copyWith(
+//            color: Colors.black,
+//            fontSize: 15.0,
+//            decoration: TextDecoration.underline),
+//      ),
+//    );
+//  }
+//
+//  Widget _astrolabeUrl() {
+//    return InkWell(
+//      onTap: _launchLinkAstrolabe,
+//      child: Text(
+//        "Développé par Astrolabe",
+//        style: style.copyWith(
+//            color: Colors.black,
+//            fontSize: 15,
+//            decoration: TextDecoration.underline),
+//      ),
+//    );
+//  }
+//
+//
+//
+//  void launchLinkEnDI() async {
+//    const urlEndi = "hhuh";
+//
+//    if (await canLaunch(urlEndi)) {
+//      await launch(urlEndi);
+//    } else {
+//
+//    }
+//  }
+//
+//  void _launchLinkAstrolabe() async {
+//    const url = "https://astrolabe.coop";
+//
+//    if (await canLaunch(url)) {
+//      await launch(url);
+//    } else {
+//
+//    }
+//  }
+}