* Add a script to check the license
### Motivation
Check licenses in the distribution package
### Modification
1. Add a script to check licenses, and list known licenses.
1. Remove unused dep license, lombok.
1. Remove unnecessary ignored patterns in .gitignore.
1. Add missing config items to apache-rat plugin, which just checked a small part of files before.
1. Add check to GitHub Actions process
### Result
1. Newly-added dependencies should be checked and confirmed.
1. Closes#1578
* Separate rat and dependency check
* Tee dependencies to stdout
* Add more debug messages
* Check light-weight task first
* rename from DatasourceUserMapper to DataSourceUserMapper
* add unit test in UserMapper and WorkerGroupMapper
* change cn.escheduler to org.apache.dolphinscheduler
* add unit test in UdfFuncMapperTest
* add unit test in UdfFuncMapperTest
* remove DatabaseConfiguration
* add ConnectionFactoryTest
* cal duration in processInstancesList
* change desc to description
* change table name in mysql ddl
* change table name in mysql ddl
* change escheduler to dolphinscheduler
* change escheduler to dolphinscheduler
