chore: add a systematic test for concurrent transactions

[chebbyChefNEQ]

This PR adds a way to easily write test for concurrent transactions.

we define a new class called ParallelOperations where we can define:

• the initial state of a dataset
• provide a list of operation to apply to the dataset
• end state verifier

The tests will automatically test applying the transactions in random order and make sure the transactions are applied correctly

I will add more tests in subsequent PRs

I will also add a failure test where we expect certain transactions to fail in subsequent PRs