[KYUUBI #1498] Support operation log for ExecuteScala

### _Why are the changes needed?_
close #1498

Pass scala repl output to operation log.

### _How was this patch tested?_
- [ ] Add some test cases that check the changes thoroughly including negative and positive cases if possible

- [x] Add screenshots for manual tests if appropriate

- [x] [Run test](https://kyuubi.apache.org/docs/latest/develop_tools/testing.html#running-tests) locally before make a pull request

Closes #2234 from cxzl25/KYUUBI-1498.

Closes #1498

21ec282 [sychen] add prefix
fb2ee3c [sychen] pass scala repl output to operation log
8f36a52 [sychen] pass scala repl output to operation log

Authored-by: sychen <sychen@trip.com>
Signed-off-by: ulysses-you <ulyssesyou@apache.org>

externals/kyuubi-spark-sql-engine/src/main/scala/org/apache/kyuubi/engine/spark/operation/ExecuteScala.scala

@@ -71,9 +71,9 @@ class ExecuteScala(
             if (result != null) {
               new ArrayFetchIterator[Row](result.collect())
             } else {
-              // TODO (#1498): Maybe we shall pass the output through operation log
-              // but some clients may not support operation log
-              new ArrayFetchIterator[Row](Array(Row(repl.getOutput)))
+              val output = repl.getOutput
+              info("scala repl output:\n" + output)
+              new ArrayFetchIterator[Row](Array(Row(output)))
             }
           }
         case Error =>