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

dingjiefei 717c44ea54 Remove the public from the junit5 test class (#11344)		10 mesiacov pred
..
javaagent	717c44ea54 Remove the public from the junit5 test class (#11344)	10 mesiacov pred
library	717c44ea54 Remove the public from the junit5 test class (#11344)	10 mesiacov pred
testing	ba912bc382 Implement C3P0 connection pool metrics (#6174)	2 rokov pred