Co-Authored-By: teemuatlut <teemu.mantykallio@live.fi>

If the IDEX mode was previously set (via GCode or the LCD Panel) to a duplication mode...   It was lost after a G28 due to this redundant setting of 'extruder_duplication_enabled'. 

It is very important to the various use cases of IDEX machines that extruder_duplication_enabled is preserved across a G28.   The reason is this allows a person to use the LCD Panel to put the machine into a duplication mode, and then send a 'normal' part file to the printer and get two parts out of the process.

- Revert "Fix FIX_MOUNTED_PROBE compile error (#14393)"
- Revert "Fix G28 with non-BLTouch probes (#14381)"
- Revert "Fix BLTOUCH deploy/stow in HS mode (#14352)"
- Revert "Apply needed BLTouch patch (#14233)"

Co-Authored-By: AnHardt <github@kitelab.de>

Add option to move away from endstop after homing.
- Add `ENDSTOP_BACKOFF` for printers with a recessed Z home button (Lulzbot TAZ 6).
- Also prevents chattering when sensorless homing with axes against bumpers.

Allow `ENABLED`, `DISABLED`, `PIN_EXISTS`, and `BUTTON_EXISTS` to take multiple arguments. Also add:
- Alias `ANY(...)` for `!DISABLED(...)`
- Alias `ANY_PIN(...)` for `PIN_EXISTS(a) || PIN_EXISTS(b) ...`
- Alias `EITHER(A,B)` for `ANY(...)`
- Alias `ALL(...)` and `BOTH(A,B)` for `ENABLED(...)`
- `NONE(...)` for `DISABLED(...)`

* Multi-nozzle selective duplication
* Use a bit-mask, reduce stepper_indirection.h size
* Tweak the multi-nozzle duplication description
* Use 'S' as a bool in M605
* Add HAS_DUPLICATION_MODE conditional
* Remove '_MODE' from the option name
* M605 in the style of Stacker M280
* Also include direct mask style (P)