IOS group&collapse parameters (#115)

* IOS group&collapse parameters

* Fix style issue

Author: laimonas

src/Resolver/NotificationResolver.php

@@ -194,6 +194,12 @@ public function resolve(array $data)
             ->setAllowedTypes('adm_group', 'string')
             ->setDefined('adm_group_message')
             ->setAllowedTypes('adm_group_message', 'array')
+            ->setDefined('thread_id')
+            ->setAllowedTypes('thread_id', 'string')
+            ->setDefined('summary_arg')
+            ->setAllowedTypes('summary_arg', 'string')
+            ->setDefined('summary_arg_count')
+            ->setAllowedTypes('summary_arg_count', 'int')
             ->setDefined('ttl')
             ->setAllowedTypes('ttl', 'int')
             ->setDefined('priority')

tests/OneSignal/Tests/Resolver/NotificationResolverTest.php

@@ -5,8 +5,8 @@
 use OneSignal\Resolver\NotificationResolver;
 use OneSignal\Tests\ConfigMockerTrait;
 use OneSignal\Tests\PrivateAccessorTrait;
-use Symfony\Component\OptionsResolver\OptionsResolver;
 use PHPUnit\Framework\TestCase;
+use Symfony\Component\OptionsResolver\OptionsResolver;
 
 class NotificationResolverTest extends TestCase
 {
@@ -103,6 +103,9 @@ public function testResolveWithValidValues()
             'android_group_message' => ['value'],
             'adm_group' => 'value',
             'adm_group_message' => ['value'],
+            'thread_id' => 'value',
+            'summary_arg' => 'value',
+            'summary_arg_count' => 10,
             'ttl' => 23,
             'priority' => 10,
             'app_id' => 'value',