Refactor language switcher and enhance site routing

Renamed 'LanguageDropdownSwitcher' to 'LanguageSelector' for better representation of the component's functionality. Removed unnecessary dependencies and optimized function declarations. Updated site routing to include new pages like 'contact', 'terms-of-service', and 'privacy-policy'. Also made adjustments for multi-language support, providing better user experience.

apps/web/app/(marketing)/(legal)/privacy-policy/page.tsx

@@ -1,11 +1,22 @@
 import { SitePageHeader } from '~/(marketing)/_components/site-page-header';
+import { createI18nServerInstance } from '~/lib/i18n/i18n.server';
 import { withI18n } from '~/lib/i18n/with-i18n';
 
-function PrivacyPolicyPage() {
+export async function generateMetadata() {
+  const { t } = await createI18nServerInstance();
+
+  return {
+    title: t('marketing.privacyPolicy'),
+  };
+}
+
+async function PrivacyPolicyPage() {
+  const { t } = await createI18nServerInstance();
+
   return (
     <div className={'mt-8'}>
       <div className={'container mx-auto'}>
-        <SitePageHeader title={`Privacy Policy`} subtitle={``} />
+        <SitePageHeader title={t('marketing.privacyPolicy')} subtitle={``} />
       </div>
     </div>
   );