* Merge javaagent-instrumentation-api into javaagent-extension-api
* remove some leftover references to javaagent-instrumentation-api
* add missing instrumentation-api to distro example
* Disable the messaging receive span telemetry by default
* fix spring-kafka tests
* remove no longer needed link from the kafka-clients library instrumentation
Co-authored-by: Trask Stalnaker <trask.stalnaker@gmail.com>