update: auto start pipewire on gentoo & openrc

lua/conf/init.lua

@@ -12,6 +12,7 @@ require("lua.conf.layout").load()
 require("lua.conf.misc").load()
 require("lua.conf.windowrules").load()
 require("lua.conf.layerrules").load()
+require("lua.conf.autostart"):load()
 
 require("lua.binds").load()
 require("lua.modules").load()