Empty args

[percevalw]

Description

Allow to use with no args, as a simple padding function :

ft = as_folded_tensor(
    [
        [0, 1, 2],
        [3, 4],
    ],
)
assert (
    ft.data
    == torch.tensor(
        [
            [0, 1, 2],
            [3, 4, 0],
        ]
    )
).all()
assert ft.data.dtype == torch.int64
assert (
    ft.mask
    == torch.tensor(
        [
            [1, 1, 1],
            [1, 1, 0],
        ]
    ).bool()
).all()

Checklist

• If this PR is a bug fix, the bug is documented in the test suite.
• Changes were documented in the changelog (pending section).
• If necessary, changes were made to the documentation.

[codecov]

Codecov Report

All modified lines are covered by tests ✅

Files	Coverage Δ
foldedtensor/__init__.py	100.00% <100.00%> (ø)

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