Feature: Support a transactional operation from multiple tables at once

[AaronFinn95]

Currently the highest level we can do transactions in onetable is on a table: await table.transact('write', transaction);

However, DynamoDB supports a transaction operation that can write/get from multiple tables at once:

TransactItems
An ordered array of up to 100 TransactWriteItem objects, each of which contains a ConditionCheck, Put, Update, or Delete object. These can operate on items in different tables, but the tables must reside in the same AWS account and Region, and no two of them can operate on the same item.

Can this be supported in dynamodb-onetable?

For a bit of context:
I'm currently following single table design principles, however for infrastructure reasons I have multiple tables. Hopefully others have the same issue. The API is great as is, however this would be a massive plus.

[mobsense]

Good idea.

Currently, this is not (yet) supported.

I've flagged this as an open issue feature enhancement.