Convert generic "ContainerStack" to an Extruder or Global stack
Convert generic "ContainerStack" to an Extruder or Global stack

Dependendant on the "type" metadata key, we create either an
ExtruderStack or a GlobalStack instance to replace the ContainerStack
instance. This should allow for transparent upgrades to the new classes.

Contributes to CURA-3497

Curahelper/Cura,hmflash/Cura,hmflash/Cura,fieldOfView/Cura,fieldOfView/Cura,ynotstartups/Wanhao,ynotstartups/Wanhao,Curahelper/Cura