[Feature] help The prompts are less readable

[yangjf2019]

Search before asking

• I searched in the issues and found nothing similar.

Motivation

1.Improve readability

When I execute flink run $FLINK_HOME/lib/paimon-flink-action-0.9.0.jar mysql_sync_table --help, Poorly readable prompts are output.We need to improve this problem.
Several other actions have the same problem:

mysql_sync_table
mysql_sync_database

postgres_sync_table

kafka_sync_table
kafka_sync_database

mongodb_sync_table
mongodb_sync_database

pulsar_sync_table
pulsar_sync_database

Action command:

  clone
  compact
  compact_database
  drop_partition
  delete
  merge_into
  rollback_to
  create_tag
  create_tag_from_timestamp
  delete_tag
  reset_consumer
  migrate_table
  migrate_file
  migrate_database
  remove_orphan_files
  query_service
  expire_partitions
  mark_partition_done
  create_branch
  delete_branch
  fast_forward
  repair
  rewrite_file_index
  expire_snapshots

2. Remove duplicate prompts from postgres_sync_table

https://github.com/apache/paimon/blob/master/paimon-flink/paimon-flink-cdc/src/main/java/org/apache/paimon/flink/action/cdc/postgres/PostgresSyncTableActionFactory.java#L56-L57

Solution

We can add prompt for cdc action to improving the output information.The desired look is as follows:

mysql_sync_table

mysql_sync_database

merge_into

Anything else?

No response

Are you willing to submit a PR?

• I'm willing to submit a PR!