Add LockTimeoutAnalyzer utility and corresponding tests

- Implemented `LockTimeoutAnalyzer` to parse timeout values from RFC-compliant strings and return `DateInterval` objects.
- Added `LockTimeoutAnalyzerTest` with data providers to validate handling of various timeout cases, including "Second" and "Infinite".

src/Bundle/ChillDocStoreBundle/Dav/Utils/LockTimeoutAnalyzer.php

@@ -0,0 +1,45 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * Chill is a software for social workers
+ *
+ * For the full copyright and license information, please view
+ * the LICENSE file that was distributed with this source code.
+ */
+
+namespace Chill\DocStoreBundle\Dav\Utils;
+
+use DateInterval;
+
+class LockTimeoutAnalyzer
+{
+    /**
+     * Analyzes the timeout value from the provided content string, RFC2068 string
+     * and return a DateInterval object representing the timeout duration.
+     *
+     * @param string $content The input string containing timeout information, as described by RFC2518, section 4.2
+     *
+     * @return \DateInterval the calculated timeout as a DateInterval object
+     *
+     * @throws \Exception if the DateInterval creation fails
+     */
+    public function analyzeTimeout(string $content): \DateInterval
+    {
+        $types = explode(',', $content);
+        $firstType = trim(reset($types));
+
+        if (str_starts_with($firstType, 'Second-')) {
+            $seconds = (int) substr($firstType, 7);
+
+            return new \DateInterval(sprintf('PT%dS', $seconds));
+        }
+
+        if ('Infinite' === $firstType) {
+            return new \DateInterval('PT24H');
+        }
+
+        return new \DateInterval('PT3600S');
+    }
+}