Optimize common strings

Marlin/src/Marlin.cpp

Marlin/src/Marlin.h

Marlin/src/core/serial.cpp

Marlin/src/core/serial.h

Marlin/src/core/utility.cpp

Marlin/src/feature/bedlevel/ubl/ubl.cpp

Marlin/src/feature/host_actions.cpp

Marlin/src/feature/host_actions.h

Marlin/src/feature/joystick.cpp

Marlin/src/feature/pause.cpp

Marlin/src/feature/prusa_MMU2/mmu2.cpp

Marlin/src/gcode/bedlevel/abl/G29.cpp

Marlin/src/gcode/calibrate/G34_M422.cpp

Marlin/src/gcode/calibrate/G425.cpp

Marlin/src/gcode/calibrate/M48.cpp

Marlin/src/gcode/config/M217.cpp

Marlin/src/gcode/config/M43.cpp

Marlin/src/gcode/config/M92.cpp

Marlin/src/gcode/feature/mixing/M166.cpp

Marlin/src/gcode/lcd/M0_M1.cpp