Implement HAL and apply macros across code-base

.gitignore

Marlin/Conditionals_post.h

Marlin/Marlin.h

Marlin/MarlinConfig.h

Marlin/Marlin_main.cpp

Marlin/Sd2Card.cpp

Marlin/Sd2Card.h

Marlin/SdFile.h

Marlin/boards.h

Marlin/buzzer.h

Marlin/circularqueue.h

Marlin/configuration_store.cpp

Marlin/configuration_store.h

Marlin/dac_dac084s085.cpp

Marlin/dac_dac084s085.h

Marlin/hex_print_routines.cpp

Marlin/macros.h

Marlin/pins.h

Marlin/pins_RAMPS.h

Marlin/planner.cpp