feat(comments): add comments to episodes + update naming of status to post

- remove confusing counts for episode (total favourites, total reblogs)
- add comments section to
episode page to display episode comments + post replies linked to the episode

app/Libraries/CommentObject.php

@@ -0,0 +1,42 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * @copyright  2021 Podlibre
+ * @license    https://www.gnu.org/licenses/agpl-3.0.en.html AGPL3
+ * @link       https://castopod.org/
+ */
+
+namespace App\Libraries;
+
+use ActivityPub\Core\ObjectType;
+use App\Entities\Comment;
+
+class CommentObject extends ObjectType
+{
+    protected string $type = 'Note';
+
+    protected string $attributedTo;
+
+    protected string $inReplyTo;
+
+    protected string $replies;
+
+    public function __construct(Comment $comment)
+    {
+        $this->id = $comment->uri;
+
+        $this->content = $comment->message_html;
+        $this->published = $comment->created_at->format(DATE_W3C);
+        $this->attributedTo = $comment->actor->uri;
+
+        if ($comment->in_reply_to_id !== null) {
+            $this->inReplyTo = $comment->reply_to_comment->uri;
+        }
+
+        $this->replies = url_to('comment-replies', $comment->actor->username, $comment->episode->slug, $comment->id);
+
+        $this->cc = [$comment->actor->followers_url];
+    }
+}