Add Nukkit Core

[IWareQ]

Hello, I am developing plugins for Nukkit (Minecraft Bedrock Edition core) and I would like you to add this core to support. I'll be very thankful.

GitHub: github.com/CloudburstMC/Nukkit

[DenWav]

If someone wants to submit a PR for the platform I'd consider it.

[stale[bot]]

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