Includes conditions expressions for transactions Put.

[preissler]

Hello Scanamo maintainers,

I've made some enhancements to the Scanamo Scala library to improve its functionality. Below is a detailed summary of the changes:

Include conditions for put items in ScanamoTransactWriteRequest:
Implemented the ability to specify request conditions for put items within ScanamoTransactWriteRequest. This enhancement empowers users to define conditions that must be met for transactional put operations to succeed, it complements the already implemented support for transactions conditions .

Exposes TransactionCanceledException:
This enhancement strengthens error handling capabilities, enabling users to distinguish between different transaction cancellation scenarios, thereby facilitating improved troubleshooting and error resolution.

These changes have been running successfully in our production environment since mid-March without any observed issues. This feature is particularly crucial for us as it enables the implementation of transactions and optimistic locks with Scanamo.

Thank you.

[asarturas]

Hi @rtyley, I wonder what are your thoughts and/or if you had a chance to consider this contribution? Would be great to have fuller transaction support in main Scanamo package.