Implement Last.fm account linking UI

ui/src/i18n/en.json

@@ -297,7 +297,11 @@
     "delete_user_title": "Delete user '%{name}'",
     "delete_user_content": "Are you sure you want to delete this user and all their data (including playlists and preferences)?",
     "notifications_blocked": "You have blocked Notifications for this site in your browser's settings",
-    "notifications_not_available": "This browser does not support desktop notifications or you are not accessing Navidrome over https"
+    "notifications_not_available": "This browser does not support desktop notifications or you are not accessing Navidrome over https",
+    "lastfmLinkSuccess": "Last.fm successfully linked and scrobbling enabled",
+    "lastfmLinkFailure": "Last.fm could not be linked",
+    "lastfmUnlinkSuccess": "Last.fm unlinked and scrobbling disabled",
+    "lastfmUnlinkFailure": "Last.fm could not unlinked"
   },
   "menu": {
     "library": "Library",
@@ -310,7 +314,8 @@
         "theme": "Theme",
         "language": "Language",
         "defaultView": "Default View",
-        "desktop_notifications": "Desktop Notifications"
+        "desktop_notifications": "Desktop Notifications",
+        "lastfmScrobbling": "Scrobble to Last.fm"
       }
     },
     "albumList": "Albums",