Added forget password screen

FrontEnd/lib/screens/forget_password.dart

+import 'package:flutter/material.dart';
+import 'package:govimithura/providers/authentication_provider.dart';
+import 'package:govimithura/screens/login.dart';
+import 'package:govimithura/utils/loading_overlay.dart';
+import 'package:govimithura/utils/utils.dart';
+import 'package:govimithura/widgets/utils/common_widget.dart';
+import 'package:provider/provider.dart';
+
+import '../widgets/utils/buttons/custom_elevated_button.dart';
+import '../widgets/utils/text_fields/primary_textfield.dart';
+
+class ForgetPasswordScreen extends StatefulWidget {
+  const ForgetPasswordScreen({super.key});
+
+  @override
+  State<ForgetPasswordScreen> createState() => _ForgetPasswordScreenState();
+}
+
+class _ForgetPasswordScreenState extends State<ForgetPasswordScreen> {
+  final GlobalKey<FormState> _key = GlobalKey<FormState>();
+  late AuthenticationProvider pAuthentication;
+
+  @override
+  void initState() {
+    super.initState();
+    pAuthentication =
+        Provider.of<AuthenticationProvider>(context, listen: false);
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      appBar: AppBar(
+        title: const Text(
+          "Forget Password",
+        ),
+      ),
+      body: Padding(
+        padding: const EdgeInsets.all(10.0),
+        child: Form(
+          key: _key,
+          child: Column(
+            mainAxisAlignment: MainAxisAlignment.center,
+            crossAxisAlignment: CrossAxisAlignment.center,
+            children: [
+              const LogoText(),
+              spacingWidget(30, SpaceDirection.vertical),
+              const Text(
+                "Please enter your email address to recieve reset password link",
+                style: TextStyle(fontSize: 16),
+                textAlign: TextAlign.center,
+              ),
+              spacingWidget(20, SpaceDirection.vertical),
+              PrimaryTextField(
+                onChanged: (value) {
+                  pAuthentication.setEmail(value);
+                },
+                label: "Email Address",
+                validator: (value) {
+                  if (value == null || value.isEmpty) {
+                    return 'Required';
+                  } else if (!(value.contains("@") && value.contains("."))) {
+                    return 'Enter valid Email Address';
+                  }
+                  return null;
+                },
+              ),
+              spacingWidget(20, SpaceDirection.vertical),
+              CustomElevatedButton(
+                text: "Send reset password link",
+                onPressed: () async {
+                  if (_key.currentState!.validate()) {
+                    Navigator.pushAndRemoveUntil(
+                        context,
+                        MaterialPageRoute(
+                            builder: (context) => const LoginScreen()),
+                        (route) => false);
+                    bool isSent = await LoadingOverlay.of(context)
+                        .during(pAuthentication.forgetPassword(context));
+                    if (mounted && isSent) {
+                      Utils.showDialogBox(context,
+                          "Link sent to ${pAuthentication.authModel.email} please check your email inbox");
+                    }
+                  }
+                },
+              )
+            ],
+          ),
+        ),
+      ),
+    );
+  }
+}