Add new paradigm classes for notify

- Create BaseDepository class
- Create Entity, Collection, Factory and Depository classes
- Create FormattedNotification Entity, Collection and Factory to remove business logic from Notify repository
- Create new NotificationCreationIntercepted exception to allow addons to cancel notification creation
- Remove unused frio notifications/notify.tpl template

src/Capabilities/ICanCreateFromTableRow.php

@@ -0,0 +1,16 @@
+<?php
+
+namespace Friendica\Capabilities;
+
+use Friendica\BaseEntity;
+
+interface ICanCreateFromTableRow
+{
+	/**
+	 * Returns the correcponding Entity given a table row record
+	 *
+	 * @param array $row
+	 * @return BaseEntity
+	 */
+	public function createFromTableRow(array $row);
+}