[Feature](cdc) add DB2 database sync

[vinlee19]

Proposed changes

In this PR, it will be supported to synchronize the snapshot data and incremental data from Db2 to Apache Doris.

<FLINK_HOME>/bin/flink run \
     -Dexecution.checkpointing.interval=10s \
     -Dparallelism.default=1 \
     -c org.apache.doris.flink.tools.cdc.CdcTools \
     ./lib/flink-doris-connector-1.17-1.6.2-SNAPSHOT.jar \
     db2-sync-database \
     --database db2_test\
     --sqlserver-conf hostname=127.0.0.1 \
     --sqlserver-conf port=50000 \
     --sqlserver-conf username=db2inst1 \
     --sqlserver-conf password="doris123456" \
     --sqlserver-conf database-name=testdb \
     --sqlserver-conf schema-name=DB2INST1 \
     --including-tables "tbl1|tbl2" \
     --sink-conf fenodes=127.0.0.1:8030 \
     --sink-conf username=root \
     --sink-conf password=\
     --sink-conf jdbc-url=jdbc:mysql://127.0.0.1:9030 \
     --sink-conf sink.label-prefix=label \
     --table-conf replication_num=1

It should be noted that when you configure --db2-conf scan.incremental.snapshot.enabled=true in shell, please use Flink CDC version 3.1 or above.
Issue Number: close #xxx

Problem Summary:

Describe the overview of changes.

Checklist(Required)

1. Does it affect the original behavior: (Yes/No/I Don't know)
2. Has unit tests been added: (Yes/No/No Need)
3. Has document been added or modified: (Yes/No/No Need)
4. Does it need to update dependencies: (Yes/No)
5. Are there any changes that cannot be rolled back: (Yes/No)

Further comments

If this is a relatively large or complex change, kick off the discussion at [email protected] by explaining why you chose the solution you did and what alternatives you considered, etc...

[JNSimba]

Please rebase master

[JNSimba]

There are some conflicts in the code @vinlee19 PTAL

[vinlee19]

There are some conflicts in the code @vinlee19 PTAL

done

[JNSimba]

LGTM