Add forgot password, reset password, and verify OTP providers and view models

- Implemented `ForgotPasswordViewModel`, `ResetPasswordViewModel`, and `VerifyOtpViewModel` for handling respective functionalities.
- Created provider functions for lazy loading of these view models in the app.
- Updated routing to utilize the new providers for managing state in the forgot password flow.
- Refactored UI components to integrate with the new view models, ensuring proper state management and user feedback during operations.

lib/core/providers/forgot_password_provider.dart

@@ -0,0 +1,16 @@
+import 'package:flutter/material.dart';
+import 'package:provider/provider.dart';
+
+import '../../data/repositories/auth_repository.dart';
+import '../../view_models/forgot_password_view_model.dart';
+
+/// Lazy ForgotPasswordViewModel provider
+Widget forgotPasswordProvider({required Widget child}) {
+  return ChangeNotifierProvider(
+    create:
+        (context) => ForgotPasswordViewModel(
+          authRepository: context.read<AuthRepository>(),
+        ),
+    child: child,
+  );
+}

lib/core/providers/reset_password_provider.dart

@@ -0,0 +1,16 @@
+import 'package:flutter/material.dart';
+import 'package:provider/provider.dart';
+
+import '../../data/repositories/auth_repository.dart';
+import '../../view_models/reset_password_view_model.dart';
+
+/// Lazy ResetPasswordViewModel provider
+Widget resetPasswordProvider({required Widget child}) {
+  return ChangeNotifierProvider(
+    create:
+        (context) => ResetPasswordViewModel(
+          authRepository: context.read<AuthRepository>(),
+        ),
+    child: child,
+  );
+}

lib/core/providers/verify_otp_provider.dart

@@ -0,0 +1,15 @@
+import 'package:flutter/material.dart';
+import 'package:provider/provider.dart';
+
+import '../../data/repositories/auth_repository.dart';
+import '../../view_models/verify_otp_view_model.dart';
+
+/// Lazy VerifyOtpViewModel provider
+Widget verifyOtpProvider({required Widget child}) {
+  return ChangeNotifierProvider(
+    create:
+        (context) =>
+            VerifyOtpViewModel(authRepository: context.read<AuthRepository>()),
+    child: child,
+  );
+}