[2.0.x] Software endstop options by axis

Fix include path for VIKI

* Add files via upload

* Add files via upload

* Add files via upload

* Checked LCD / edited / revised pins_MKS_BASE.h

As requested :)

* Delete Configuration_adv.h

* Delete Configuration.h

* Deleted /Marlin/Marlin/src/config/examples/MksSbase/*.* and moved them to /Marlin/Marlin/src/config/examples/Mks/Sbase/*.*

* Add files via upload

Python isnt always python2

fix 'axis_unhomed_error' not defined error

[2.0.x] Unify Z fade factor

[2.0.x] Remove obsolete UBL z_offset

Fix 'axis_unhomed_error' not defined error when pause with unhomed status

So now this script is compatible with both python versions 2 and 3

Signed-off-by: Alexey Shvetsov <alexxy@gentoo.org>

[2.0.x] Add a README.h file for Arduino IDE users

get rid of twi.h

move to board files

Setup FolgerTech i3-2020 Configuration files as a reference platform for
32-Bit work.

Also fix MAX7219 debug lights on 32-bit platforms.

2.0.x - MPC4451 I2C support

[2.0.x] Move FILAMENT_RUNOUT_SENSOR to a feature

[2.0.x] Serial double echo fix

[2.0.x] Different NEOPIXEL types

Same as #7728 but for 2.0.x,
Lot of cleanup and remove references in whole code to other "LED files" than leds.h. Now will be much easier to add next drivers/libraries. e.g. FastLED. But bad news, currently FastLED is suporting only RGB devices (no RGBW)

[2.0.x] Remove legacy ADVANCE feature

[2.0.x] Allow UBL G29 and G26 to build without a probe

[2.0.x] Use segmented moves when moving axis from LCD