Add delta auto-calibration and configuration for Flsun AC

Marlin/Conditionals_post.h

Marlin/SanityCheck.h

...configurations/delta/FLSUN/auto_calibrate/Configuration.h

...igurations/delta/FLSUN/auto_calibrate/Configuration_adv.h

...le_configurations/delta/FLSUN/kossel_mini/Configuration.h

...onfigurations/delta/FLSUN/kossel_mini/Configuration_adv.h

Marlin/example_configurations/delta/generic/Configuration.h

.../example_configurations/delta/generic/Configuration_adv.h

.../example_configurations/delta/kossel_mini/Configuration.h

...mple_configurations/delta/kossel_mini/Configuration_adv.h

...n/example_configurations/delta/kossel_pro/Configuration.h

...ample_configurations/delta/kossel_pro/Configuration_adv.h

...in/example_configurations/delta/kossel_xl/Configuration.h

...xample_configurations/delta/kossel_xl/Configuration_adv.h