Add cli rcon

[wallopthecat]

docker exec docker-eldewrito rcon say Hello World

I saw someone in the discord talking about a CLI client, thought this would be a cool addition

[DomiStyle]

If you can point me towards an existing RCon CLI client, sure.

Don't have the spare time to write one myself right now though.

[wallopthecat]

Try https://github.com/Swiggies/ElDewCon

[DomiStyle]

From what I've seen it only allows using the Messages.json, not directly passing commands.

[wallopthecat]

My bad - wsc node project could be a lightweight client -
wsc ws://ip:11776 -p dew-rcon