Automatic patch shape recommendation

[qin-yu]

In this PR, I add a feature to compute a good patch shape based on:

• The whole sample volume shape
• The maximum patch volume for the selected GPU
• The minimum theoretical halo size for the neural network

Tests are included.

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 80.88235% with 13 lines in your changes missing coverage. Please review.

Project coverage is 48.86%. Comparing base (6d9fd80) to head (ad1c1f7). Report is 9 commits behind head on plantsegv2.

Files with missing lines	Patch %	Lines
tests/core/test_zoo.py	69.23%	12 Missing :warning:
...g/functionals/predictions/utils/array_predictor.py	95.65%	1 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## plantsegv2 #302 +/- ## ============================================== + Coverage 48.51% 48.86% +0.35% ============================================== Files 53 53 Lines 3770 3798 +28 ============================================== + Hits 1829 1856 +27 - Misses 1941 1942 +1 ```

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