feat: add online status to thumbnail

[Jarva]

Example:

This was added to allow support servers the ability to decide whether to offer support at a glance as a lot of people would prefer not to offer support to people running offline servers without a proxy.

[lucko]

I personally don't think its necessary to display this info on the thumbnail

[Leguan16]

I honestly wondered why the thumbnail doesn't display whether the server is in online/offline mode. I would change the wording to "offline mode" and don't show it at all if its online mode however.

[Jarva]

The current implementation already doesn't show anything if the server is online, this only adds the text to offline mode servers

[Satherov]

Would certainly help us over at the All The Mods Discord. It's just one click, but that click goes a long way when you have hundreds of people in your support chats every day