feat: shared links custom URL (#19999)

* feat: custom url for shared links

* feat: use a separate route and query param

---------

Co-authored-by: Jason Rasmussen <jason@rasm.me>

i18n/en.json

@@ -725,6 +725,7 @@
   "current_server_address": "Current server address",
   "custom_locale": "Custom Locale",
   "custom_locale_description": "Format dates and numbers based on the language and the region",
+  "custom_url": "Custom URL",
   "daily_title_text_date": "E, MMM dd",
   "daily_title_text_date_year": "E, MMM dd, yyyy",
   "dark": "Dark",
@@ -1172,7 +1173,6 @@
   "light": "Light",
   "like_deleted": "Like deleted",
   "link_motion_video": "Link motion video",
-  "link_options": "Link options",
   "link_to_oauth": "Link to OAuth",
   "linked_oauth_account": "Linked OAuth account",
   "list": "List",
@@ -1745,6 +1745,7 @@
   "shared_link_clipboard_copied_massage": "Copied to clipboard",
   "shared_link_clipboard_text": "Link: {link}\nPassword: {password}",
   "shared_link_create_error": "Error while creating shared link",
+  "shared_link_custom_url_description": "Access this shared link with a custom URL",
   "shared_link_edit_description_hint": "Enter the share description",
   "shared_link_edit_expire_after_option_day": "1 day",
   "shared_link_edit_expire_after_option_days": "{count} days",
@@ -1770,6 +1771,7 @@
   "shared_link_info_chip_metadata": "EXIF",
   "shared_link_manage_links": "Manage Shared links",
   "shared_link_options": "Shared link options",
+  "shared_link_password_description": "Require a password to access this shared link",
   "shared_links": "Shared links",
   "shared_links_description": "Share photos and videos with a link",
   "shared_photos_and_videos_count": "{assetCount, plural, other {# shared photos & videos.}}",