Update resampler.py

Repair NameError: name 'List' is not defined. Did you mean: 'list'?

resampler.py

@@ -1,8 +1,9 @@
+from typing import List
+from torch import Tensor
 from functools import partial
 from typing import Optional, Tuple
 import numpy as np
 import warnings
-
 import torch
 from torch import nn
 from torch import Tensor