added string for every screen and removed from app strings

lib/views/login/widgets/login_title.dart

@@ -1,8 +1,8 @@
 import 'package:flutter/material.dart';
 import 'package:tm_app/core/theme/colors.dart';
 
-import '../../../core/constants/strings.dart';
 import '../../../core/utils/size_config.dart';
+import '../strings/login_strings.dart';
 
 class LoginTitle extends StatelessWidget {
   const LoginTitle({super.key});
@@ -12,12 +12,12 @@ class LoginTitle extends StatelessWidget {
     return Column(
       children: [
         Text(
-          AppStrings.signInTitle,
+          LoginStrings.signInTitle,
           style: TextStyle(fontSize: 28.0.sp(), fontWeight: FontWeight.w700),
         ),
         SizedBox(height: 8.0.h()),
         Text(
-          AppStrings.signInSubtitle,
+          LoginStrings.signInSubtitle,
           style: TextStyle(
             fontSize: 14.0.sp(),
             fontWeight: FontWeight.w400,