[linkis-gateway-authentication]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 |
| TokenAuthException |
org.apache.linkis.gateway.authentication.exception.TokenAuthException |
| TokenNotExistException |
org.apache.linkis.gateway.authentication.exception.TokenNotExistException |