Added mircoseconds in Timestamp type

Author: Илья

src/QueryResult.php

@@ -194,7 +194,7 @@ protected function fillRows($rows)
                         break;
 
                     case 'TIMESTAMP':
-                        $_row[$column['name']] = is_numeric($value) ? date('Y-m-d H:i:s', $value/1000000) : $value;
+                        $_row[$column['name']] = is_numeric($value) ? date('Y-m-d H:i:s.u', $value/1000000) : $value;
                         break;
 
                     case 'DATETIME':

src/Types/TimestampType.php

@@ -7,6 +7,10 @@
 
 class TimestampType extends DatetimeType
 {
+    /**
+     * @var string
+     */
+    protected static $datetime_format = 'Y-m-d\TH:i:s.u\Z';
 
     protected $ydb_key_name = "uint64_value";
 

tests/CheckTypeTest.php

@@ -146,7 +146,7 @@ public function test(){
             "Timestamp" => [
                 "class"     => TimestampType::class,
                 "values"    => [
-                    "2023-06-14 17:12:15"
+                    "2023-06-14 17:12:15.000000"
                 ]
             ]
         ];