docs: add Admincraft to the Community Solutions list (#450)

Author: joanroig

README.md

@@ -310,6 +310,7 @@ kubectl logs -f deployment/bds
 - [kaiede/minecraft-bedrock-backup image](https://hub.docker.com/r/kaiede/minecraft-bedrock-backup) by @Kaiede
 - [ghcr.io/edward3h/mc-webhook](https://github.com/edward3h/minecraft-webhook) by @edward3h
 - [Minecraft Bedrock Server Bridge](https://github.com/macchie/minecraft-bedrock-server-bridge) by @macchie
+- [Admincraft](https://github.com/joanroig/Admincraft) by @joanroig
 
 ## Tutorials
 [@TheTinkerDad]([url](https://github.com/TheTinkerDad)) provides an excellent tutorial on how to host multiple instances on a single port (19132) so that it's discoverable: https://www.youtube.com/watch?v=ds0_ESzjbfs