input/raw: use the irc-framework api

We are not allowed to mess with the connection object directly
according to the public api surface of the framework

server/plugins/inputs/raw.ts

@@ -4,7 +4,7 @@ const commands = ["raw", "send", "quote"];
 
 const input: PluginInputHandler = function ({irc}, chan, cmd, args) {
 	if (args.length !== 0) {
-		irc.connection.write(args.join(" "));
+		irc.raw(...args);
 	}
 
 	return true;