[Feature Request] Expose get/setListenerName in the C API

[roryschadler]

https://github.com/apache/pulsar-client-cpp/blob/27cba3e7d154f97e01911cd5de2cc0d4eaf2ef50/lib/c/c_ClientConfiguration.cc doesn't seem to expose getListenerName and setListenerName from

pulsar-client-cpp/include/pulsar/ClientConfiguration.h

Lines 270 to 280 in 27cba3e

	/**
	* Configure the listener name that the broker returns the corresponding `advertisedListener`.
	*
	* @param name the listener name
	*/
	ClientConfiguration& setListenerName(const std::string& listenerName);
	/**
	* @return the listener name for the broker
	*/
	const std::string& getListenerName() const;

That prevents the Node.js binding from exposing it (see related issue apache/pulsar-client-node#214), as it relies on the C API.

I'm not an expert, but at first glance this doesn't seem like a ton of work. I'd be willing to give it a shot.

[BewareMyPower]

Yes. It should be easy. If you want to try this feature, you can take a look at the previous PRs that add new C APIs. https://github.com/apache/pulsar-client-cpp/commits/main/lib/c

[roryschadler]

Thanks! Opened a PR: #370