Added upload firmware function to printer connection
Added upload firmware function to printer connection

ad1217/Cura,fxtentacle/Cura,Curahelper/Cura,lo0ol/Ultimaker-Cura,hmflash/Cura,fxtentacle/Cura,bq/Ultimaker-Cura,fieldOfView/Cura,totalretribution/Cura,ad1217/Cura,bq/Ultimaker-Cura,markwal/Cura,derekhe/Cura,quillford/Cura,fieldOfView/Cura,DeskboxBrazil/Cura,ynotstartups/Wanhao,quillford/Cura,senttech/Cura,senttech/Cura,lo0ol/Ultimaker-Cura,derekhe/Cura,Curahelper/Cura,hmflash/Cura,markwal/Cura,DeskboxBrazil/Cura,totalretribution/Cura,ynotstartups/Wanhao