Add a public profile followers tab.

Expose follower lists on public profiles with a dedicated tab and API path instead of only showing counts.

routes/web.php

@@ -493,7 +493,7 @@ Route::get('/@{username}/collections/{slug}', [ProfileCollectionController::clas
 
 Route::get('/@{username}/{tab}', [ProfileController::class, 'showTabByUsername'])
     ->where('username', '[A-Za-z0-9_-]{3,20}')
-    ->where('tab', 'posts|artworks|stories|achievements|worlds|collections|about|stats|favourites|activity')
+    ->where('tab', 'posts|artworks|stories|achievements|worlds|collections|about|stats|favourites|activity|followers')
     ->name('profile.tab');
 
 Route::get('/@{username}', [ProfileController::class, 'showByUsername'])