Add utils for vista3d

[yiheng-wang-nv]

This PR is a part of #7987

Description

A few sentences describing the changes proposed in this pull request.

Types of changes

• Non-breaking change (fix or new feature that would not break existing functionality).
• New tests added to cover the changes.
• Integration tests passed locally by running ./runtests.sh -f -u --net --coverage.
• Quick tests passed locally by running ./runtests.sh --quick --unittests --disttests.
• In-line docstrings updated.
• Documentation updated, tested make html command in the docs/ folder.

[ericspod]

I had very minor suggestions but otherwise looks fine.

[KumoLiu]

/build

[KumoLiu]

Hi @yiheng-wang-nv, please help take a look at the ci error.

[2024-08-09T10:27:16.069Z] ======================================================================
[2024-08-09T10:27:16.069Z] ERROR: test_cp_shape_0 (tests.test_vista3d_utils.TestGetLargestConnectedComponentMaskPoint)
[2024-08-09T10:27:16.069Z] ----------------------------------------------------------------------
[2024-08-09T10:27:16.069Z] Traceback (most recent call last):
[2024-08-09T10:27:16.069Z]   File "/usr/local/lib/python3.9/dist-packages/parameterized/parameterized.py", line 620, in standalone_func
[2024-08-09T10:27:16.069Z]     return func(*(a + p.args), **p.kwargs, **kw)
[2024-08-09T10:27:16.069Z]   File "/home/jenkins/agent/workspace/MONAI-premerge/monai/tests/test_vista3d_utils.py", line 122, in test_cp_shape
[2024-08-09T10:27:16.069Z]     mask = get_largest_connected_component_mask_point(**input_data)
[2024-08-09T10:27:16.069Z]   File "/home/jenkins/agent/workspace/MONAI-premerge/monai/monai/transforms/utils.py", line 1240, in get_largest_connected_component_mask_point
[2024-08-09T10:27:16.069Z]     x, y, z = p.round().int().tolist()
[2024-08-09T10:27:16.069Z] RuntimeError: "round_cuda" not implemented for 'Long'
[2024-08-09T10:27:16.069Z] 
[2024-08-09T10:27:16.069Z] ======================================================================
[2024-08-09T10:27:16.069Z] ERROR: test_cp_shape_1 (tests.test_vista3d_utils.TestGetLargestConnectedComponentMaskPoint)
[2024-08-09T10:27:16.069Z] ----------------------------------------------------------------------
[2024-08-09T10:27:16.069Z] Traceback (most recent call last):
[2024-08-09T10:27:16.069Z]   File "/usr/local/lib/python3.9/dist-packages/parameterized/parameterized.py", line 620, in standalone_func
[2024-08-09T10:27:16.069Z]     return func(*(a + p.args), **p.kwargs, **kw)
[2024-08-09T10:27:16.069Z]   File "/home/jenkins/agent/workspace/MONAI-premerge/monai/tests/test_vista3d_utils.py", line 122, in test_cp_shape
[2024-08-09T10:27:16.069Z]     mask = get_largest_connected_component_mask_point(**input_data)
[2024-08-09T10:27:16.069Z]   File "/home/jenkins/agent/workspace/MONAI-premerge/monai/monai/transforms/utils.py", line 1240, in get_largest_connected_component_mask_point
[2024-08-09T10:27:16.069Z]     x, y, z = p.round().int().tolist()
[2024-08-09T10:27:16.069Z] RuntimeError: "round_cuda" not implemented for 'Long'

[KumoLiu]

/build