Computes fast ARDL-MIDAS profiling solution
midasar_pr(Y, YLAG, X, intercept, tau, which_loss, num_evals)
(vec) vector of response.
(mat) matrix of lagged values of Y.
(mat) matrix of covariates.
(double) 1 - includes intercept, else not.
(double) quantile level.
loss function choice. 1 - mse, 2 - als, 3 - rq.
number of evalution points of MIDAS parameter.