Added a new field called push provider name in addDevice api call

packages/stream_chat/lib/src/core/api/device_api.dart

@@ -29,13 +29,16 @@ class DeviceApi {
   /// Add a device for Push Notifications.
   Future<EmptyResponse> addDevice(
     String deviceId,
-    PushProvider pushProvider,
-  ) async {
+    PushProvider pushProvider, {
+    String? pushProviderName,
+  }) async {
     final response = await _client.post(
       '/devices',
       data: {
         'id': deviceId,
         'push_provider': pushProvider.name,
+        if (pushProviderName != null && pushProviderName.isNotEmpty)
+          'push_provider_name': pushProviderName,
       },
     );
     return EmptyResponse.fromJson(response.data);