Introduce Mastodon entity factories and API\Entity

src/Api/Entity/Mastodon/Field.php

@@ -0,0 +1,20 @@
+<?php
+
+namespace Friendica\Api\Entity\Mastodon;
+
+use Friendica\Api\BaseEntity;
+
+/**
+ * Class Field
+ *
+ * @see https://docs.joinmastodon.org/api/entities/#field
+ */
+class Field extends BaseEntity
+{
+	/** @var string */
+	protected $name;
+	/** @var string (HTML) */
+	protected $value;
+	/** @var string (Datetime)*/
+	protected $verified_at;
+}