move apis into rom/modules/main for shell compatibility

ccemux/autorun/startup.lua

@@ -6,7 +6,7 @@ if ccemux then
 	-- add a System setup tab
 	fs.mount('sys/apps/system/ccemux.lua', 'linkfs', 'packages/ccemux/system/ccemux.lua')
 
-	local Config = require('config')
+	local Config = require('opus.config')
 
 	for k,v in pairs(Config.load('ccemux')) do
 		if not peripheral.getType(k) then

ccemux/system/ccemux.lua

@@ -1,5 +1,5 @@
-local Config = require('config')
-local UI     = require('ui')
+local Config = require('opus.config')
+local UI     = require('opus.ui')
 
 local ccemux = _G.ccemux