Added Maelstrom: A lightweight stress test tool that uses concurrent threads to test API reliability.

[twentyone24]

• maelstrom stress-test API reliability on concurrent threads, with latency metrics.

A lightweight performant tool to help you understand how your API performs when load increases, also while making sure it doesn't eat up all the resources of the source. It can provide you the latency metrics to further dig deep into performance. would be useful tool, while making sure of zero downtime deployment, API scaling & sharding.