* Add traceback after watchdog timeout

Add the cpability to perform a traceback following a watchdog timeout.

* Enhanced hardware SPI

Allow use of either SSP0 or SSP1.
Ensure that no data is left in I/O buffers after calls to enable sharing of SSP hardware.

* Make flash emulation of eeprom the default

Make use of flash for eeprom storage the default. This means that usage of eeprom will not cause USB drive mount/unmount operations.

* Allow sharing of SD card

SD card I/O operations from the USB stack take place in idle loop, rather than at interrupt time. Allowing sharing of the SPI bus.

New configuration options to allow usage of the SD card to be specified.

* Fix problem with hardware SPI pins

Framework and build platform now located at https://github.com/p3p/pio-framework-arduino-lpc176x and https://github.com/p3p/pio-nxplpc-arduino-lpc176x respectively

fix mkssbase leds

move hardware serial

remove hardware/software serial

Hardware Serial extraction

HardwareSerial ISRs

fix disabled serial2 causing Serial object to link

move usb devices out to framework

separate out adc/pwm peripheral function from hal.cpp

fix includes

remove unused pwm init

move adc

HAL header update

templated filtered adc

LPC1769 platform

There is no switchable Power Supply.   Don't put it on Pin 12.   
(Pin 12 is actually FAN1)

Add MS3 pins. Optimize SENSITIVE_PINS.

Co-Authored-By: TheLongAndOnly <thelongandonly@users.noreply.github.com>

Co-Authored-By: Giuliano Zaro <gmagician@users.noreply.github.com>

...Set no move earlier so it applies

Followup to #11994

* Clean up Temperature PID
* Improve EEPROM read/write/validate
* Group `SINGLENOZZLE` saved settings
* Group planner saved settings
* Group filament change saved settings
* Group skew saved settings
* Group `FWRETRACT` saved settings

Addressing #12048

Co-Authored-By: timoxd7 <timoxd7@users.noreply.github.com>

Previously, it was not possible for the TYPE argument to ultralcd menu macros to itself be a #defined value. This made it difficult to create variables to set many related menu items to a common precision that could be easily changed.

Also added details to the README to make sure the Ender-2 status is properly documented.