Add archlinux to 32-bit menu

roles/netbootxyz/templates/menu/linux-i386.ipxe.j2

@@ -5,6 +5,7 @@ goto ${menu} ||
 :linux_menu
 menu Linux Installers - Current Arch [ ${arch} ]
 item --gap Popular Linux Operating Systems:
+item archlinux ${space} Archlinux
 item alpinelinux ${space} Alpine Linux
 item debian ${space} Debian
 item gentoo ${space} Gentoo