Add PHPVersion::__construct to api

Author: VincentLanglet

src/Php/PhpVersion.php

@@ -18,6 +18,8 @@ final class PhpVersion
 public const SOURCE_UNKNOWN = 4;
 
 /**
+ * @api
+ *
  * @param self::SOURCE_* $source
  */
 public function __construct(private int $versionId, private int $source = self::SOURCE_UNKNOWN)