tvrmst 0.0.6

• Added rmst_dynamic() for individual dynamic RMST curves over the grid.
• Added plot helpers: plot_rmst_individual() and plot_rmst_mean().
• Added RMST curve plot helpers: plot_rmst_curve() and plot_rmst_delta().
• Updated example script and technical report.
• Added rmst_dynamic_curves() and plot_rmst_dynamic_by_cluster() for model-agnostic individual dynamic RMST trajectories on (t, S) inputs.