NumPyScalar is not implemented for all types that implement numpy::Element

[jsutton24]

Certain types cannot be used as numpy array element types in method signatures. Specifically:

• PyObject
• bf16
• bool
• f16
• i16
• isize
• usize

I came across this issue while trying to use numpy::PyArray1<bool>:

error[E0277]: the trait bound `bool: pyo3_stub_gen::stub_type::numpy::NumPyScalar` is not satisfied
    |
279 |     ) -> PyResult<Bound<'py, PyArray1<bool>>> {
    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `pyo3_stub_gen::stub_type::numpy::NumPyScalar` is not implemented for `bool`, which is required by `pyo3::Bound<'_, numpy::PyArray<bool, numpy::ndarray::Dim<[usize; 1]>>>: pyo3_stub_gen::PyStubType`

[jsutton24]

The fix looks like it ought to be simple, just adding the missing types to the existing set.