[Enhancement](streamload) stream tvf support user specified label (#24219)
stream tvf support user specified label
example:
curl -v --location-trusted -u root: -H "sql: insert into test.t1 WITH LABEL label1 select c1,c2 from http_stream(\"format\" = \"CSV\", \"column_separator\" = \",\")" -T example.csv http://127.0.0.1:8030/api/_http_stream
return:
{
"TxnId": 2064,
"Label": "label1",
"Comment": "",
"TwoPhaseCommit": "false",
"Status": "Success",
"Message": "OK",
"NumberTotalRows": 2,
"NumberLoadedRows": 2,
"NumberFilteredRows": 0,
"NumberUnselectedRows": 0,
"LoadBytes": 27,
"LoadTimeMs": 152,
"BeginTxnTimeMs": 0,
"StreamLoadPutTimeMs": 83,
"ReadDataTimeMs": 92,
"WriteDataTimeMs": 41,
"CommitAndPublishTimeMs": 24
}
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