chore: standardize chrono provider

Signed-off-by: Sebastian Krupinski <krupinski01@gmail.com>

shared/lib/Chrono/Entity/EntityPropertiesBaseInterface.php

@@ -0,0 +1,21 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * SPDX-FileCopyrightText: Sebastian Krupinski <krupinski01@gmail.com>
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+
+namespace KTXF\Chrono\Entity;
+
+use KTXF\Resource\Provider\Node\NodePropertiesBaseInterface;
+
+interface EntityPropertiesBaseInterface extends NodePropertiesBaseInterface {
+
+	public const JSON_TYPE = 'chrono.entity';
+	public const JSON_PROPERTY_DATA = 'data';
+
+	public function getDataRaw(): array|string|null;
+
+}