Function create_burndown_chart 

pub fn create_burndown_chart(
    time_logs: &[TimeLog],
    burndown_type: &BurndownType,
    burndown_options: &BurndownOptions,
    render_options: &mut RenderOptions<'_>,
) -> Result<(), ChartSettingError>

Create a burndown line chart.

Errors

• Returns ChartSettingError::FileNotFound if the file in RenderOptions does not exist.
• Returns ChartSettingError::CharmingError if the graph could not be created.