added zip extension to manifest
added zip extension to manifest

recalbox/recalbox-manager,sveetch/recalbox-manager,sveetch/recalbox-manager,recalbox/recalbox-manager,recalbox/recalbox-manager,recalbox/recalbox-manager,sveetch/recalbox-manager,sveetch/recalbox-manager,recalbox/recalbox-manager,sveetch/recalbox-manager