Function deform_conv2d 

pub fn deform_conv2d(
    x: Tensor<4>,
    offset: Tensor<4>,
    weight: Tensor<4>,
    mask: Option<Tensor<4>>,
    bias: Option<Tensor<1>>,
    options: DeformConvOptions<2>,
) -> Tensor<4>

Applies a Deformable 2D convolution.