Version 1 of Tutorial

First version of the tutorial, which demonstrates the possible data handling with RAGA sampling.
More details are provided in the manuscript:

Rational Approximation of Golden Angles: Accelerated Reconstructions for Radial MRI

N. Scholand, P. Schaten, C. Graf, D. Mackner, H.C.M. Holme, M. Blumenthal, A. Mao, J. Assländer, and M. Uecker

Preprint on ArXiv (DOI: 10.48550/arXiv.2401.02892)