WAS ResponseTimes: Disaggregate non-HTTP response times

[kgibm]

Confirmed that Dave is happy with this.

Previously, for ResponseTimes, non-HTTP work would be aggregated together into a null URI column. Instead, what this PR does is if it's non-HTTP work, then it sets the "URI" to the type of work (e.g. IIOP, MDB, etc.). This way we get response times disaggregated by the type of non-HTTP work and then this makes it easier to throw into a pivot table to break down response times of EJBs vs MDBs, etc.

Example output:

$ java -Xmx1g "-Dcom.ibm.ws390.smf.dateTimeFormat=yyyy-MM-dd'T'HH:mm:ss.SSSZ" -DPRINT_WRAPPER=false -Dcom.ibm.ws390.smf.smf1209.useTime=RESPONDED -Dcom.ibm.ws390.smf.smf1209.breakdown=BY_SERVER -jar smftools.jar "INFILE(SF.T01850.MTFTP.F001)" "PLUGIN(com.ibm.smf.was.plugins.ResponseTimes,STDOUT)"
Time,Server,Requests,AvgResponse,MaxResponse,AvgQueue,AvgDisp,AvgCPU,AvgOffload,AvgOffload%,AvgBytesRcvd,AvgBytesSent,URI
"2025-02-13T20:54:00.000+0000",LPAR1,42,1,7,0,0,0,0,0.8333333,0,0,MBean
"2025-02-13T20:54:00.000+0000",LPAR1,85,40,1426,0,40,4,2,0.6537468,0,0,MDBA
"2025-02-13T20:54:00.000+0000",LPAR1,22094,1,5102,0,1,0,0,0.43708295,533,9843,IIOP
"2025-02-13T20:54:00.000+0000",LPAR1,12,2,5,0,1,0,0,1.0,0,0,Other
"2025-02-13T20:55:00.000+0000",LPAR1,1,3,3,0,3,0,0,0.0,397,329,/Servlet1

[kgibm]

@jbouzak Please review when you have a chance, thank you.