Add a JSON output mode

[MarkusTieger]

Add an "--json" option. This will then print the status as json, instead of

mc.hypixel.net:25565 : version=Requires MC 1.8 / 1.21 online=33020 max=200000 motd='                §aHypixel Network §c[1.8-1.21]
   §e§lNEW BUILD BATTLE MODE§7§l: §6§lSPEED BUILDERS'

Like this:

{
  "host": "mc.hypixel.net",
  "port": 25565",
  "version": "Requires MC 1.8 / 1.21",
  "online": 33020,
  "max": 200000,
  "motd": "                §aHypixel Network §c[1.8-1.21]\n   §e§lNEW BUILD BATTLE MODE§7§l: §6§lSPEED BUILDERS"
}

Why?
The current format can't be safely parsed afaik.
The motd could just escape the ' boundries, or the version could contain a "online=", which would destroy any regex.

[itzg]

Great idea and should be easy to implement.

[itzg]

Since the retrieved server info is already structured for json, I'll have it output that as sub-field like:

{"host":"localhost","port":25565,"server_info":{"version":{"name":"1.21.3","protocol":768},"players":{"max":20,"online":0,"Sample":null},"description":{"text":"A Minecraft Server","bold":false,"italic":false,"underlined":false,"strikethrough":false,"obfuscated":false,"color":"","extra":null},"favicon":""}}

[itzg]

Released in https://github.com/itzg/mc-monitor/releases/tag/0.15.0