criada a tela responsible_register_screen.dart, o model responsavel_model.dart e feitos outros ajustes

lib/widgets/buttom_custom.dart

@@ -9,11 +9,8 @@ class ButtonCustom extends StatelessWidget{
   final Color colorBorder;
   final widthCustom;
   final heightCustom;
-  final font;
 
-  const ButtonCustom(
-  {Key? key,
-    required this.font,
+ButtonCustom({
     required this.onPressed,
     required this.text,
     required this.size,
@@ -22,7 +19,7 @@ class ButtonCustom extends StatelessWidget{
     required this.colorBorder,
     this.widthCustom = 1.0,
     this.heightCustom = 1.0
-}) : super(key: key);
+});
   @override
   Widget build (BuildContext context) {
     double width =MediaQuery.of(context).size.width;
@@ -33,16 +30,14 @@ class ButtonCustom extends StatelessWidget{
         primary: colorButton,
         minimumSize: Size(width*widthCustom! , height*heightCustom!),
         side:  BorderSide(width: 2,color : colorBorder,),
-
-
       ),
       onPressed: onPressed,
       child: Text(text,
-        style: TextStyle(fontFamily: font, color: colorText,
-        fontSize: size,fontWeight: FontWeight.bold
+        style: TextStyle(
+          color: colorText,
+          fontSize: size,
+            fontWeight: FontWeight.bold
         ),
-
-
       ) ,
     );
   }