4103 enhances surface Dice to use subvoxel borders

[wyli]

Fixes #4103

Description

• considers spacing and subvoxel borders when computing surface Dice
• reimplemented http://medicaldecathlon.com/files/Surface_distance_based_measures.ipynb using pytorch API
• there's possibility of speed up once Versatile distance transforms (Euclidean and Geodesic) #1332 is addressed

Types of changes

• Non-breaking change (fix or new feature that would not break existing functionality).
• Breaking change (fix or new feature that would cause existing functionality to change).
• 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.

[yiheng-wang-nv]

Thanks @wyli . I checked the changes and this PR looks good to me. Could you address a few minor issues?

[wyli]

Thanks @wyli . I checked the changes and this PR looks good to me. Could you address a few minor issues?

thanks, the comments are addressed, I also update to use the pytorch APIs as much as possible instead of converting everything into numpy arrays.

[wyli]

/build