Add support for custom net.Listeners in cluster config

Allows providing custom net.Listener implementations via the new
Listeners option, enabling more flexible testing scenarios.

v1.13.5: ignore any SASL/PLAIN response data

See the changelog for more details;
This allows the client to work against Tencent

plugin/kotel/v1.4.0: add messaging.kafka.{fetch,produce}_records.count

Thanks @sbuliarca!

plugin/kotel/v1.3.0: use stable otel modules

otel/metric has stabilized, so we can avoid using unstable APIs (and
avoid technically breaking this package again...)

Thanks lahsivjar

v1.13.4: fix race condition between Close and a metadata update

While this is rare to happen, it can. See the changelog for more
details.

plugin/kotel/v1.2.0: patches

* Changes the span name operation from "send" to "publish" (twmb#450, thanks @yianni)
* Fixes kotel to use the correct otel tracing attributes (twmb#449, thanks @owenhaynes)
* Bump otel modules since pre-1.0 otel  had some breaking changes (twmb#445, thanks @axw)

pkg/kadm/v1.8.1: patch *.AllFailed()

v1.13.3: minor internal code improvements

See the changelog for more details.

v1.13.2: improve offset commit + join&sync interaction

See the changelog for more details.

pkg/kmsg/v1.5.0: add SetTimeout and SetThrottle