Add ModelReflection Service as dependency injection + tests

sources/Forms/IO/Format/AbstractIOFormat.php

@@ -0,0 +1,16 @@
+<?php
+/*
+ * @copyright   Copyright (C) 2010-2025 Combodo SAS
+ * @license     http://opensource.org/licenses/AGPL-3.0
+ */
+
+namespace Combodo\iTop\Forms\IO\Format;
+
+use JsonSerializable;
+
+abstract class AbstractIOFormat implements JsonSerializable
+{
+	abstract public function jsonSerialize(): mixed;
+
+	abstract public static function IsCompatible(string $sOtherFormatClass): bool;
+}