cecf/opentelemetry-java-instrumentation: java agent代码 @ v250_kafka

Trask Stalnaker 2f344d3689 Fix new properties (#6633)		2 gadi atpakaļ
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src	2f344d3689 Fix new properties (#6633)	2 gadi atpakaļ
build.gradle.kts	e8e573c2ee Add experimental span attribute job.system (#6586)	2 gadi atpakaļ