"filament_load_time" and "filament_unload_time" values to match
the MK3 MMU2 behavior.
Emitting of the remaining times into the output G-code was made optional
through a new "remaining_times" configuration value, so the firmware
flavors and versions, which do not know the M73 code, will not complain.
Configuration changes:
The wipe tower default position was shifted inwards after the wipe tower
coordinate reference point was changed from the center to the left front
corner.
Added the "filament_load_time" and "filament_unload_time" values
to the MK3 MMU filament profiles.
Enabled "remaining_times" for the MK2.5, MK3 and MK3MMU2 printers.