Function silu

pub fn silu<const D: usize, B>(tensor: Tensor<B, D>) -> Tensor<B, D>
where
    B: Backend,

Applies the SiLU function (also known as the swish function) element-wise.

$$ \text{SiLU}(x) = x * \sigma(x) = \frac{x}{1 + \exp(-x)} $$