Primeiro commit no ramo main

lib/servicos/shared_preferences/shared.dart

@@ -0,0 +1,17 @@
+import 'package:shared_preferences/shared_preferences.dart';
+
+class PrefService{
+  Future createCacheLogin(String cpf, String senha,String cidade)async{
+    SharedPreferences preferences = await SharedPreferences.getInstance();
+    preferences.setStringList('login', [cpf,senha,cidade]);
+  }
+  Future readCacheLogin()async{
+    SharedPreferences preferences = await SharedPreferences.getInstance();
+    final List<String>? login = preferences.getStringList('login');
+    return login;
+  }
+  Future removeCacheLogin()async{
+    SharedPreferences preferences = await SharedPreferences.getInstance();
+    preferences.remove('login');
+  }
+}