New implementation for motorUpdate

[zxvcv]

void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef *htim)

Implementation of this function should be rewrited to use 3 functions:

• moveX (returns -1 if Xaxis should be moved left, 0 if Xaxis should't be moved and 1 if Xaxis should be moved right)
• moveY (returns -1 if Yaxis should be moved left, 0 if Yaxis should't be moved and 1 if Yaxis should be moved right)
• moveZ (returns -1 if Zaxis should be moved left, 0 if Zaxis should't be moved and 1 if Zaxis should be moved right)

These functions should be set in main structure of 3D printer in G Code parser as pointers.

[zxvcv]

problem was resolved in other way, see #6