Rewrite reporter code in modules

[donyunardi]

• tm_g_gh_boxplot.R @m7pr
• tm_g_gh_correlationplot.R @m7pr
• tm_g_gh_density_distribution_plot.R @m7pr
• tm_g_gh_lineplot.R @m7pr
• tm_g_gh_scatterplot.R @m7pr
• tm_g_gh_spaghettiplot.R @m7pr