feat(web): improved user onboarding (#18782)

* wip

* added user metadata key

* wip

* restructure onboarding system and add initial locale

* update language card and fix translation updating

* remove prints

* new card formattings

* fix cursed unmount effect

* add OAuth route onboarding

* remove required admin auth for onboarding

* delete the hotwire button

* update open-api files

* delete import

* fix failing oauth onboarding fields

* fix e2e test

* fix web e2e test

* add onboarding to user registration e2e test

* remove todo

this was a holdover during dev and didn't get deleted

* fix server small tests

* use onDestroy to save settings rather than a bind:this

* change to false for isOnboarded

* fix other auth small test

* provide type annotation in user factory metadata field

* remove onboardingCompelted from UserDto

* move translations to onboarding steps array and mark as derived so they update

* break language selector out into its own component as per @danieldietzler suggestion

* remove hello header on card

* fix flixkering on server privacy card

* label/id fixes

* openapi

---------

Co-authored-by: Alex Tran <alex.tran1502@gmail.com>

web/src/lib/stores/server-config.store.ts

@@ -1,4 +1,11 @@
-import { getServerConfig, getServerFeatures, type ServerConfigDto, type ServerFeaturesDto } from '@immich/sdk';
+import {
+  getConfig,
+  getServerConfig,
+  getServerFeatures,
+  type ServerConfigDto,
+  type ServerFeaturesDto,
+  type SystemConfigDto,
+} from '@immich/sdk';
 import { writable } from 'svelte/store';
 
 export type FeatureFlags = ServerFeaturesDto & { loaded: boolean };
@@ -37,9 +44,17 @@ export const serverConfig = writable<ServerConfig>({
   publicUsers: true,
 });
 
+export type SystemConfig = SystemConfigDto & { loaded: boolean };
+export const systemConfig = writable<SystemConfig>();
+
 export const retrieveServerConfig = async () => {
   const [flags, config] = await Promise.all([getServerFeatures(), getServerConfig()]);
 
   featureFlags.update(() => ({ ...flags, loaded: true }));
   serverConfig.update(() => ({ ...config, loaded: true }));
 };
+
+export const retrieveSystemConfig = async () => {
+  const config = await getConfig();
+  systemConfig.update(() => ({ ...config, loaded: true }));
+};