feat: Adds logout functionality

Adds a logout button to the home page app bar.

Implements the logout logic in the login page model, clearing the stored user token.

Navigates to the splash screen after logout to handle redirection based on the updated authentication state.

lib/pages/home_page/home_page.dart

@@ -1,3 +1,5 @@
+import 'package:barcode_scanner/pages/login_page/login_page_model.dart';
+import 'package:barcode_scanner/router/go_router_builder.dart';
 import 'package:barcode_scanner/router/go_secure_router_builder.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
@@ -15,6 +17,21 @@ class _HomePageState extends ConsumerState<HomePage> {
     final primaryColor = Theme.of(context).primaryColor;
 
     return Scaffold(
+      appBar: AppBar(
+        backgroundColor: Colors.white,
+        automaticallyImplyLeading: false,
+        actions: [
+          IconButton(
+            onPressed: () async {
+              await ref.read(loginPageModelProvider.notifier).logOut();
+              WidgetsBinding.instance.addPostFrameCallback((timeStamp) {
+                SplashRoute().go(context);
+              });
+            },
+            icon: Icon(Icons.login),
+          ),
+        ],
+      ),
       backgroundColor: Colors.white,
       body: Center(
         child: SingleChildScrollView(

lib/pages/login_page/login_page_model.dart

@@ -91,6 +91,11 @@ class LoginPageModel extends StateNotifier<LoginPageState> {
       SplashRoute().go(context);
     });
   }
+
+  Future<void> logOut() async {
+    await secureStorage.delete(key: TokenProvider.tokenKey);
+    await checkHasUserConnected();
+  }
 }
 
 @freezed