ExportCircuitIDProtocol param for ADD_ONION control command

Control Port is used to run hidden services, but unfortunately, even with the specified HiddenServiceExportCircuitID haproxy, ephemeral hidden services still won't reveal the circuit ID, so I added a parameter to the ADD_ONION command.

I'm not sure if I did it perfectly, so I'll ask a question about the static function helper_parse_circuit_id_protocol in src/features/hs/hs_config

I didn't dare to remove the keyword static and make this function exportable, but the code I wrote simply duplicates this function in essence. I don't know how to do it better, I'm waiting for your feedback.

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