[leopoldhub] Custom plugins, Packet cancellation and other improvements...

[leopoldhub]

Update node-minecraft-protocol version. Add the possibility to make custom plugins for the proxy and localServer. Add the possibility to cancel sended packets. An example is also created to help peoples.

[leopoldhub]

Update the way servers are stored.

let serverList = {
  hub: {
    host: 'localhost',
    port: 25565,
    isDefault: true,
    isFallback: true
  },
  minigames: {
    host: 'localhost',
    port: 25566
  }
}

to

let serverList = [
    {
      name: "hub",
      settings: {
        host: 'localhost',
        port: 25565,
        isDefault: true,
        isFallback: true
      }
    },
    {
      name: "minigames",
      settings: {
      host: 'localhost',
      port: 25566
    }
  },
];

[leopoldhub]

Add a prettier config and reformat the files.