[linkis-engineconn-core ]module errorcode optimization and documentation #3371
Description
[linkis-engineconn-core ]module errorcode optimization and documentation
Example：
documentation（文档）
Error code optimization（错误码优化）
Classes that need to be optimized（需要优化的类）
| class | path |
|---|---|
| EngineConnErrorCode | org.apache.linkis.engineconn.core.exception.EngineConnErrorCode |
| EngineConnFatalException | org.apache.linkis.engineconn.core.exception.EngineConnFatalException |