FTMotion: Fix TMC2208 timing bug (attempt)

[dbuezas]

Description

TMC2208 Direction-Flip Delay

Some TMC2208 / TMC2208_STANDALONE setups may require a short delay after a DIR change
to avoid timing-sensitive glitches, especially when using stealthChop.

When enabled for an axis, FT Motion will "pause" that axis for > 750µs after a detected
direction flip by holding its trajectory coordinate constant for a multiple of FTM_TS
frames. For the default FTM_FS = 1000, it is a single 1ms frame.
Other axes keep moving normally, and the wait is cancelled if the axis flips again.

NOTE: Typically only needed if you actually use stealthChop on that axis.

Requirements

Benefits

Configurations

FTM + 2208 drivers in stealthchop

Related Issues

Hopefully fixes #28248

[yrabbit]

The situation with TMC2225 (TMC2208) has been corrected. My settings for FTM, Creality 4.2.7 board:

#define X_DRIVER_TYPE  TMC2208_STANDALONE
#define Y_DRIVER_TYPE  TMC2208_STANDALONE
#define Z_DRIVER_TYPE  TMC2208_STANDALONE
#define E0_DRIVER_TYPE TMC2208_STANDALONE

#define FTM_IS_DEFAULT_MOTION 
#define NO_STANDARD_MOTION 

#define FTM_DEFAULT_SHAPER_X      ftMotionShaper_ZVD
#define FTM_SHAPING_DEFAULT_FREQ_X   40.0f

#define FTM_DEFAULT_SHAPER_Y      ftMotionShaper_ZVD
#define FTM_SHAPING_DEFAULT_FREQ_Y   40.0f

#define FTM_DEFAULT_SHAPER_Z      ftMotionShaper_NONE
#define FTM_SHAPING_DEFAULT_FREQ_Z   21.0f

#define FTM_SHAPER_E
#define FTM_DEFAULT_SHAPER_E      ftMotionShaper_NONE
#define FTM_SHAPING_DEFAULT_FREQ_E   21.0f 

#define FTM_SMOOTHING
#define FTM_SMOOTHING_TIME_E        0.06f

#define FTM_POLYS 
#define FTM_TRAJECTORY_TYPE POLY5 

#define FTM_BUFFER_SIZE             2048
#define FTM_FS  

Before the fixes related to TMC2225 (TMC2208), the extruder would stop:

n-1.mp4

After corrections in this PR, stoppages due to TMC2225 (TMC2208) are no longer observed.