Reorganization of the matlab scripts for more readability

matlab/COSOlver_matrices_analysis.m

matlab/check_checkpoint.m

matlab/compile_results.m

matlab/compute_Sapj.m

matlab/conv_thm_2D.m

matlab/create_gif.m

matlab/create_mov.m

matlab/default_plots_options.m

matlab/fort.90

matlab/load_2D_data.m

matlab/load_3D_data.m

matlab/load_4D_data.m

matlab/load_5D_data.m

matlab/load_grid_data.m

matlab/load_params.m

matlab/load_results.m

matlab/plot_kernels.m

matlab/plots/plot_kperp_spectrum.m

matlab/plots/plot_radial_transport_and_shear.m

matlab/plots/plot_shear_and_reynold_stress.m