Discord status to show online players

[rjclarkewp007]

Add a custom status option to the Discord bot to display the current online players on the server.

[niekcandaele]

So filling this out with some additional info:

• This should be a configurable option. For public instances, rotating the Discord bot status is not feasible. The Discord bot status is global, so having this info rotate for hundreds of servers is just a no-go. For self-hosted instances, this is a nice feature

There's already some logic for rotating info here: https://github.com/CatalysmsServerManager/7-days-to-die-server-manager/blob/master/api/hooks/discordBot/index.js#L101-L135

First thoughts would be to have an if statement,
if it's a selfhosted instance => Get player data continously and update status
if not => do the logic that's there now.

You can use the env var CSMM_PRIVATE_INSTANCE for that if check probably. It doesn't 100% mean it's a self hosted instance, but should be close enough