multiple_service_request and multiple_service_response should use vector of uint8 rather than comma-separated string for the service list

[mmguero]

There's no reason to build a string of comma-separated ints inside the binpac and then pass that string. It should just pass a vector of the ints. I don't think we need service_count either, as I think vectors know their own size.

• events.bif
• request in .pac
• response in .pac