API refactor + update (#6127)

code/modules/world_api/helpers.dm

@@ -0,0 +1,16 @@
+//Init the API at startup
+/hook/startup/proc/setup_api()
+	for (var/path in typesof(/datum/topic_command) - /datum/topic_command)
+		var/datum/topic_command/A = new path()
+		if(A != null)
+			topic_commands[A.name] = A
+			topic_commands_names.Add(A.name)
+		listclearnulls(topic_commands)
+		listclearnulls(topic_commands_names)
+
+	if (config.api_rate_limit_whitelist.len)
+		// To make the api_rate_limit_whitelist[addr] grabs actually work.
+		for (var/addr in config.api_rate_limit_whitelist)
+			config.api_rate_limit_whitelist[addr] = 1
+
+	return 1