refactor: enforce view filenames to use kebab case

Also had to use `@style` directives inside /resources/views/components/user-tag.blade.php. Prettier was erroring when the `@if` directive was inside the html attribute otherwise. Seems to have always been an issue, but the CI must only be formatting files that changed and because the file was only just changed now, it never discovered it until now.

app/Http/Controllers/User/NotificationSettingController.php

@@ -50,7 +50,7 @@ class NotificationSettingController extends Controller
     {
         abort_unless($request->user()->is($user), 403);
 
-        return view('user.notification_setting.edit', [
+        return view('user.notification-setting.edit', [
             'user'   => $user,
             'groups' => Group::query()
                 ->where('is_modo', '=', false)