feat(web): Download links and Obtainium link generator on Utilities page and onboarding (#20589)

web/src/routes/auth/onboarding/+page.svelte

@@ -5,6 +5,7 @@
   import OnboardingCard from '$lib/components/onboarding-page/onboarding-card.svelte';
   import OnboardingHello from '$lib/components/onboarding-page/onboarding-hello.svelte';
   import OnboardingLocale from '$lib/components/onboarding-page/onboarding-language.svelte';
+  import OnboardingMobileApp from '$lib/components/onboarding-page/onboarding-mobile-app.svelte';
   import OnboardingServerPrivacy from '$lib/components/onboarding-page/onboarding-server-privacy.svelte';
   import OnboardingStorageTemplate from '$lib/components/onboarding-page/onboarding-storage-template.svelte';
   import OnboardingTheme from '$lib/components/onboarding-page/onboarding-theme.svelte';
@@ -14,7 +15,14 @@
   import { retrieveServerConfig, retrieveSystemConfig, serverConfig } from '$lib/stores/server-config.store';
   import { user } from '$lib/stores/user.store';
   import { setUserOnboarding, updateAdminOnboarding } from '@immich/sdk';
-  import { mdiCloudCheckOutline, mdiHarddisk, mdiIncognito, mdiThemeLightDark, mdiTranslate } from '@mdi/js';
+  import {
+    mdiCellphoneArrowDownVariant,
+    mdiCloudCheckOutline,
+    mdiHarddisk,
+    mdiIncognito,
+    mdiThemeLightDark,
+    mdiTranslate,
+  } from '@mdi/js';
   import { onMount } from 'svelte';
   import { t } from 'svelte-i18n';
 
@@ -26,6 +34,7 @@
       | typeof OnboardingStorageTemplate
       | typeof OnboardingServerPrivacy
       | typeof OnboardingUserPrivacy
+      | typeof OnboardingMobileApp
       | typeof OnboardingLocale;
     role: OnboardingRole;
     title?: string;
@@ -76,6 +85,13 @@
       title: $t('admin.backup_onboarding_title'),
       icon: mdiCloudCheckOutline,
     },
+    {
+      name: 'mobile_app',
+      component: OnboardingMobileApp,
+      role: OnboardingRole.USER,
+      title: $t('mobile_app'),
+      icon: mdiCellphoneArrowDownVariant, // or you can use mdiCellphone
+    },
   ]);
 
   let index = $state(0);