fix: unsued and draw

- remove all warning about unused function and variable.
- adding draw figure to wait_space sequence

src/qualibration/compute_image.rs

@@ -31,6 +31,7 @@ pub fn image_treshold(img: &Mat, tresh: &Treshold) -> Result<Mat> {
     Ok(bord_treshed)
 }
 
+#[allow(dead_code)]
 pub fn image_warp_treshold(
     img: &Mat,
     homography: &Mat,