feat(likes): Option to prevent users liking their own posts (#3534)

* Option to prevent users liking their own posts
* test: user can only like own post if setting ON

Co-authored-by: Sami Mazouz <ilyasmazouz@gmail.com>

extensions/likes/extend.php

@@ -7,13 +7,14 @@
  * LICENSE file that was distributed with this source code.
  */
 
+namespace Flarum\Likes;
+
 use Flarum\Api\Controller;
 use Flarum\Api\Serializer\BasicUserSerializer;
 use Flarum\Api\Serializer\PostSerializer;
 use Flarum\Extend;
 use Flarum\Likes\Event\PostWasLiked;
 use Flarum\Likes\Event\PostWasUnliked;
-use Flarum\Likes\Listener;
 use Flarum\Likes\Notification\PostLikedBlueprint;
 use Flarum\Likes\Query\LikedByFilter;
 use Flarum\Post\Event\Deleted;
@@ -64,4 +65,10 @@ return [
 
     (new Extend\Filter(PostFilterer::class))
         ->addFilter(LikedByFilter::class),
+
+    (new Extend\Settings())
+        ->default('flarum-likes.like_own_post', true),
+
+    (new Extend\Policy())
+        ->modelPolicy(Post::class, Access\LikePostPolicy::class),
 ];