[Feat] Add transaction's logic and test

[longdafeng]

Add transaction's logic, no rollback or recover logic, maybe we can refer to rmdb transaction test.

[zywoote3ture]

Hi, I'm interested in contributing to this issue and implementing the comment board feature for the documentation site.
Could you please confirm if this issue is still open and available to work on?
Thanks!

[hnwyllmm]

Hi, I'm interested in contributing to this issue and implementing the comment board feature for the documentation site. Could you please confirm if this issue is still open and available to work on? Thanks!

You replied the wrong issue?

[zywoote3ture]

Sorry,I'm interested in contributing to this.