Improve testing tooling

[kronosapiens]

As truffle is being sunset, we would like to migrate our testing infrastructure to something newer. The two main candidates are Hardhat and Foundry.

This issue will track relevant information and discussion.

[kronosapiens]

Hardhat resources:

https://hardhat.org/hardhat-runner/docs/other-guides/truffle-migration

[kronosapiens]

Closed with #1194