Function tblr2bboxes

Decode tblr outputs to prediction boxes. The process includes 3 steps: 1) De-normalize tblr coordinates by multiplying it with `normalizer`; 2) De-normalize tblr coordinates by the prior bbox width and height if `normalize_by_wh` is `True`; 3) Convert tblr (top, bottom, left, right)

(priors,
                tblr,
                normalizer=4.0,
                normalize_by_wh=True,
                max_shape=None,
                clip_border=True)