[SPARK-28694][EXAMPLES] Add Java/Scala StructuredKerberizedKafkaWordCount examples
### What changes were proposed in this pull request?
Add Java/Scala StructuredKerberizedKafkaWordCount examples to test kerberized kafka.
### Why are the changes needed?
Now,`StructuredKafkaWordCount` example is not support to visit kafka using kerberos authentication.
### Does this PR introduce any user-facing change?
No
### How was this patch tested?
```
Yarn client:
$ bin/run-example --files ${jaas_path}/kafka_jaas.conf,${keytab_path}/kafka.service.keytab \
--driver-java-options "-Djava.security.auth.login.config=${path}/kafka_driver_jaas.conf" \
--conf \
"spark.executor.extraJavaOptions=-Djava.security.auth.login.config=./kafka_jaas.conf" \
--master yarn
sql.streaming.StructuredKerberizedKafkaWordCount broker1-host:port,broker2-host:port \
subscribe topic1,topic2
Yarn cluster:
$ bin/run-example --files \
${jaas_path}/kafka_jaas.conf,${keytab_path}/kafka.service.keytab,${krb5_path}/krb5.conf \
--driver-java-options \
"-Djava.security.auth.login.config=./kafka_jaas.conf \
-Djava.security.krb5.conf=./krb5.conf" \
--conf \
"spark.executor.extraJavaOptions=-Djava.security.auth.login.config=./kafka_jaas.conf" \
--master yarn --deploy-mode cluster \
sql.streaming.StructuredKerberizedKafkaWordCount broker1-host:port,broker2-host:port \
subscribe topic1,topic2
```
Closes #25649 from hddong/Add-StructuredKerberizedKafkaWordCount-examples.
Lead-authored-by: hongdd <jn_hdd@163.com>
Co-authored-by: hongdongdong <hongdongdong@cmss.chinamobile.com>
Signed-off-by: HyukjinKwon <gurwls223@apache.org>
a838699ee0