Add missing context.device.type field required for Kochava integratio…

…n. (segmentio#806)

Analytics/Classes/Internal/SEGSegmentIntegration.m

@@ -164,6 +164,7 @@ - (NSDictionary *)staticContext
     dict[@"device"] = ({
         NSMutableDictionary *dict = [[NSMutableDictionary alloc] init];
         dict[@"manufacturer"] = @"Apple";
+        dict[@"type"] = @"ios";
         dict[@"model"] = GetDeviceModel();
         dict[@"id"] = [[device identifierForVendor] UUIDString];
         if (NSClassFromString(SEGAdvertisingClassIdentifier)) {