New options: Bootscreen as Info, game Easter-egg (#13829)

Marlin/Configuration_adv.h

Marlin/src/lcd/dogm/ultralcd_DOGM.cpp

Marlin/src/lcd/extensible_ui/lib/dgus/DGUSDisplay.cpp

Marlin/src/lcd/language/language_en.h

Marlin/src/lcd/menu/menu_info.cpp

Marlin/src/lcd/menu/menu_main.cpp

Marlin/src/lcd/ultralcd.h

Marlin/src/module/configuration_store.cpp

config/default/Configuration_adv.h

config/examples/3DFabXYZ/Migbot/Configuration_adv.h

config/examples/AlephObjects/TAZ4/Configuration_adv.h

config/examples/Alfawise/U20/Configuration_adv.h

config/examples/AliExpress/UM2pExt/Configuration_adv.h

config/examples/Anet/A2/Configuration_adv.h

config/examples/Anet/A2plus/Configuration_adv.h

config/examples/Anet/A6/Configuration_adv.h

config/examples/Anet/A8/Configuration_adv.h

config/examples/Anet/A8plus/Configuration_adv.h

config/examples/Anet/E16/Configuration_adv.h

config/examples/AnyCubic/i3/Configuration_adv.h