R/RcppExports.R
lq_ena_svd.RdCaller is responsible for centering upstream. Eigenvalues are stored as
sdev^2 (variance) to match rENA's ena.svd.
lq_ena_svd(points)List with rotation (n_dims x n_dims), eigenvalues
(length n_dims, = sdev^2), and column_names ("SVD1", "SVD2", ...)