适配kingbase数据库

[zerowindy]

Why you need it?

Is your feature request related to a problem? Please describe in details 系统建设需要，要使用kingbase数据库，并在AT模式下，实现分布式事务管理

How it could be?

A clear and concise description of what you want to happen. You can explain more about input of the feature, and output of it.

Other related information

Add any other context or screenshots about the feature request here.

[slievrly]

Thank you very much for your feedback. We have collected your requirements.

[z6135]

需求相同，系统建设需要，要使用kingbase数据库，并在AT模式下，实现分布式事务管理。

[funky-eyes]

https://github.com/apache/incubator-seata/pull/6876