is it possible to for chat or other information to display in discord using code blocks ?

I'm not exactly sure what you're asking. Can you please provide more information?

You can embed messages in discord to look like code blocks with some formating.  for instance  `this is a code block` will show up like this

That's not really an embed it's just a normal text message with special characters added to make it look like that. You can see what characters you need to add here: https://www.wepc.com/how-to/discord-text-formatting/

Im not sure where to add it in the config or .cs plugin

You would wrap whatever text you want displayed that way with the tags described in the link