Add sticky session documentation for nginx ingress ip based

[ReneWerner87]

i wanted to save my solution for a sticky session(ip based) with the ingress controller in the kubernetes setup

promotion for another report please also have an eye on my other idea, which should improve the typescript support https://github.com/socketio/socket.io/issues/4808

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Name	Status	Preview	Comments	Updated (UTC)
socket-io-website	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Sep 13, 2023 9:30am

[ReneWerner87]

@darrachequesne is anything else needed here?

[darrachequesne]

@ReneWerner87 thanks a lot!