Add @gquittet/graceful-server in the Health Checks and Graceful Shutdown documentation

[gquittet]

👋 Hello everyone

Can I add a suggestion for https://github.com/gquittet/graceful-server?

Why Graceful Server is useful

• Graceful Server is keeping track of all open connections and signaling them that the server is shutting down.
• Graceful Server is listening system events to safely close your API on interruption to avoid to keep opened ghost connections on your data sources.
• It is coming with the Kubernetes liveness and readiness out of the box.
• It support all NodeJS frameworks.
• Very simple to use.

Why is it different from existing libraries

• It is a complete solution.
• It is dependency free.
• It has a KISS code base.
• You can customize what you want.
• It is very lightweight.
• It is in active development.

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Graceful Server is a free and open-source project (MIT license) and it is used by 2 companies and get more downloads each days.

[gquittet]

If you're interested, I've run some benchmarks for the Fastify framework.

You can find the results here : https://github.com/fastify/fastify/pull/2654#issuecomment-717941068