Add "Configuración" page and update navigation to support new view

Introduced the `SettingsPage` component for managing application preferences with localStorage persistence. Updated navigation and dynamic header title logic to include the new "settings" view. Adjusted `App.js` to handle the new view state and display `SettingsPage`.

src/App.js

@@ -7,6 +7,7 @@ import RequestForm from './components/Requests/RequestForm';
 import ScheduledPage from './components/Scheduled/ScheduledPage';
 import NewRequestPage from './components/Requests/NewRequestPage';
 import HistoryPage from './components/History/HistoryPage';
+import SettingsPage from './components/Settings/SettingsPage';
 
 function App() {
   const [isMobileMenuOpen, setIsMobileMenuOpen] = useState(false);
@@ -24,6 +25,8 @@ function App() {
     ? 'Nueva Solicitud'
     : activeView === 'history'
     ? 'Historial'
+    : activeView === 'settings'
+    ? 'Configuración'
     : 'Dashboard';
 
   return (
@@ -42,6 +45,8 @@ function App() {
           <NewRequestPage />
         ) : activeView === 'history' ? (
           <HistoryPage />
+        ) : activeView === 'settings' ? (
+          <SettingsPage />
         ) : (
           <section className="content-wrapper">
             <DashboardCards />