Function fit_procrustes

pub fn fit_procrustes(
    source: &[Vec<f32>],
    target: &[Vec<f32>],
) -> Option<ProcrustesTransform>

Fit a Procrustes transformation from source to target vectors.

Both sets must have the same number of vectors and same dimensionality. Vectors should be corresponding pairs (same entity in different models).

Returns None if inputs are empty or have mismatched dimensions.