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>

i18n/en.json

@@ -1294,9 +1294,11 @@
   "oldest_first": "Oldest first",
   "on_this_device": "On this device",
   "onboarding": "Onboarding",
-  "onboarding_privacy_description": "The following (optional) features rely on external services, and can be disabled at any time in the administration settings.",
+  "onboarding_locale_description": "Select your preferred language. You can change this later in your settings.",
+  "onboarding_privacy_description": "The following (optional) features rely on external services, and can be disabled at any time in settings.",
+  "onboarding_server_welcome_description": "Let's get your instance set up with some common settings.",
   "onboarding_theme_description": "Choose a color theme for your instance. You can change this later in your settings.",
-  "onboarding_welcome_description": "Let's get your instance set up with some common settings.",
+  "onboarding_user_welcome_description": "Let's get you started!",
   "onboarding_welcome_user": "Welcome, {user}",
   "online": "Online",
   "only_favorites": "Only favorites",
@@ -1608,6 +1610,7 @@
   "server_info_box_server_url": "Server URL",
   "server_offline": "Server Offline",
   "server_online": "Server Online",
+  "server_privacy": "Server Privacy",
   "server_stats": "Server Stats",
   "server_version": "Server Version",
   "set": "Set",
@@ -1879,6 +1882,7 @@
   "user_liked": "{user} liked {type, select, photo {this photo} video {this video} asset {this asset} other {it}}",
   "user_pin_code_settings": "PIN Code",
   "user_pin_code_settings_description": "Manage your PIN code",
+  "user_privacy": "User Privacy",
   "user_purchase_settings": "Purchase",
   "user_purchase_settings_description": "Manage your purchase",
   "user_role_set": "Set {user} as {role}",