update template code

mmp/a4/label_grid.py

@@ -0,0 +1,14 @@
+from typing import Sequence
+import numpy as np
+
+from ..a3.annotation import AnnotationRect
+
+
+def iou(rect1: AnnotationRect, rect2: AnnotationRect) -> float:
+    raise NotImplementedError()
+
+
+def get_label_grid(
+    anchor_grid: np.ndarray, gts: Sequence[AnnotationRect], min_iou: float
+) -> tuple[np.ndarray, ...]:
+    raise NotImplementedError()