Refactor: reorganize login screen structure and remove unused components

- Updated import path for the login screen.
- Removed the AppStrings class from constants as it has been integrated into core constants.
- Deleted unused files related to the home page and login components, including progress bars, statistics cards, and tenders list items.
- Cleaned up widget imports in the login screen to streamline the codebase.

lib/views/login/widgets/login_logo.dart

@@ -0,0 +1,13 @@
+import 'package:flutter/material.dart';
+
+import '../../../core/constants/assets.dart';
+import '../../../size_config.dart';
+
+class LoginLogo extends StatelessWidget {
+  const LoginLogo({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    return Image.asset(AssetsManager.logo, width: 190.0.w(), height: 88.0.h());
+  }
+}