chore: added dummy crop box

Signed-off-by: Kenzo Lobos-Tsunekawa <kenzo.lobos@tier4.jp>

Author: knzo25

sensing/autoware_cuda_pointcloud_preprocessor/config/cuda_pointcloud_preprocessor.param.yaml

@@ -8,9 +8,9 @@
     object_length_threshold: 0.1
     num_points_threshold: 4
 
-    crop_box.min_x: []
-    crop_box.min_y: []
-    crop_box.min_z: []
-    crop_box.max_x: []
-    crop_box.max_y: []
-    crop_box.max_z: []
+    crop_box.min_x: [0.0]
+    crop_box.min_y: [0.0]
+    crop_box.min_z: [0.0]
+    crop_box.max_x: [0.0]
+    crop_box.max_y: [0.0]
+    crop_box.max_z: [0.0]