implemented Countable interface for cypher containers

Author: transistive

src/Types/CypherList.php

@@ -24,6 +24,7 @@
 use ArrayIterator;
 use BadMethodCallException;
 use function count;
+use Countable;
 use function in_array;
 use function is_int;
 use Laudis\Neo4j\Contracts\CypherContainerInterface;
@@ -36,7 +37,7 @@
  *
  * @implements CypherContainerInterface<int, T>
  */
-final class CypherList implements CypherContainerInterface
+final class CypherList implements CypherContainerInterface, Countable
 {
     /** @var list<T> */
     private array $array;

src/Types/CypherMap.php

@@ -24,6 +24,7 @@
 use ArrayIterator;
 use BadMethodCallException;
 use function count;
+use Countable;
 use function func_num_args;
 use function in_array;
 use function is_array;
@@ -46,7 +47,7 @@
  *
  * @psalm-immutable
  */
-final class CypherMap implements CypherContainerInterface
+final class CypherMap implements CypherContainerInterface, Countable
 {
     /** @var array<string, T> */
     private array $map;