Migrate existing endpoints to the new structure

[MAILPOET-4207]

mailpoet/lib/Automation/Engine/Endpoints/System/DatabasePostEndpoint.php

@@ -0,0 +1,25 @@
+<?php declare(strict_types = 1);
+
+namespace MailPoet\Automation\Engine\Endpoints\System;
+
+use MailPoet\Automation\Engine\API\Endpoint;
+use MailPoet\Automation\Engine\API\Request;
+use MailPoet\Automation\Engine\API\Response;
+use MailPoet\Automation\Engine\Migrations\Migrator;
+
+class DatabasePostEndpoint extends Endpoint {
+  /** @var Migrator */
+  private $migrator;
+
+  public function __construct(
+    Migrator $migrator
+  ) {
+    $this->migrator = $migrator;
+  }
+
+  public function handle(Request $request): Response {
+    $this->migrator->deleteSchema();
+    $this->migrator->createSchema();
+    return new Response(null);
+  }
+}