Add sink-connector-client option to convert DDL

[subkanthi]

It might be a useful feature for the user to pass a MySQL DDL and test the clickhouse translated DDL.

[subkanthi]

sink-connector-client ddl-translate <DDL>

[subkanthi]

./sink-connector-client ddl_translate
2024/12/16 17:55:22 ***** Translate MySQL DDL to ClickHouse DDL *****
2024/12/16 17:55:22 Enter DDL to translate: 
create table employees(eid INT AUTO_INCREMENT PRIMARY KEY, first_name varchar(50) not null);
2024/12/16 17:55:27 Sending request to URL: with DDL: create table employees(eid INT AUTO_INCREMENT PRIMARY KEY, first_name varchar(50) not null); to http://localhost:7000/ddl-translate
2024/12/16 17:55:48 CREATE TABLE employees.employees(eid Nullable(Int32),first_name String NOT NULL ,`_version` UInt64,`is_deleted` UInt8) Engine=ReplacingMergeTree(_version,is_deleted) ORDER BY eid