add the 'font' and 'label-font' arguments to the 'plot/draw-points' command

    {"color", bind(&color_read, ctx, _1, &c->color)},

    {"color-map", bind(&color_map_read, ctx, _1, &color_map)},

    {"labels", bind(&data_load_strings, _1, &c->labels)},

    {"label-font", expr_call_string_fn(bind(&font_load_best, _1, &c->label_font))},

    {"label-font-size", bind(&measure_read, _1, &c->label_font_size)},

    {"label-color", bind(&color_read, ctx, _1, &c->label_color)},

    {"label-padding", bind(&measure_read, _1, &c->label_padding)},

    {"font", expr_call_string_fn(bind(&font_load_best, _1, &c->label_font))},

  });

  if (!config_rc) {