[Feature] MySQL CDC支持SAVEPOINT相关DDL

[bobbyz3g]

使用 MySQL CDC 时, dts 报错

received ddl: QueryEvent { thread_id: 7, exec_time: 0, error_code: 0, schema: "jumpserver", query: "SAVEPOINT `s140062018762496_x2`" }

failed to parse ddl, will try ignore it, please execute the ddl manually in target, sql: SAVEPOINT `s140062018762496_x2`, error: unexpected error: failed to parse sql: SAVEPOINT `s140062018762496_x2`, error: code: Tag, input: SAVEPOINT `s140062018762496_x2`

[caiq1nyu]

目前ape-dts中mysql ddl仅支持以下类型：

savepoint相关命令不支持是预期内的行为，日志的error也是不影响程序运行的。这个issue从bug转成feature