Added Clone in Database trx

[0xvasanth]

New Features

• [ ] Add Support to close the Transaction since needs to be cloned when the transaction is passed across the thread in the Application Worker reference

Changes

• [ ] Added support to close the transaction object, since all the objects inside the struct are primitive data types or ARC, thus this should not case any issue

[joebnb]

would this will merge into sea-orm , im also facing this problem