add responsive options to this plugin (example code added)

[bayareacoder]

In addition to #1 which is now added (and which I needed since data is loaded from a database and I use a value of this data to show as item.content in this plugin, so plugin options need to update on a chart update once db data is loaded), it would also be useful to have responsive options with this plugin, as you have with Chartist itself.
In my case I needed this to leave out some legend text on smaller screen.
I added it myself to the source as follows, similar as how it is done in the chartist source:

chart.on("created", function (data) {
          var itemIndex = 0;

          if (chart.options.fillDonutOptions) {
            options = Chartist.extend(
              {},
              options,
              chart.options.fillDonutOptions
            );
            // ADDED TO ALSO INCLUDE RESPONSIVE OPTIONS FOR FILL DONUT
            if (chart.options.responsiveFillDonutOptions) {
              for (var i = 0; i < chart.options.responsiveFillDonutOptions.length; i++) {
                var mql = window.matchMedia(chart.options.responsiveFillDonutOptions[i][0]);
                if (mql.matches) {
                  options = Chartist.extend({}, options, chart.options.responsiveFillDonutOptions[i][1]);
                }
              }
            }
            drawDonut(data);
          }

This then needs to be called as follows (I'm using React with the react-chartist wrapper). The responsive options for the given media query will override the regular options:

const responsiveFillDonutOptions = [
    [
      "screen and (max-width: 768px)",
      {
        items: [ <items you want to show on smaller screen> ],
      },
    ],
  ];

  const fillDonutOptions = {
    items: [ <items you want to show on larger screen> ],
  };

  const options = {
    donut: true,
    donutWidth: 10,
    startAngle: 190,
    total: max - min,
    showLabel: false,
    plugins: [Chartist.plugins?.fillDonut?.(fillDonutOptions)],
    fillDonutOptions,
    responsiveFillDonutOptions,
  };

This works but the API is not so elegant since there is also a responsiveOptions (as a prop for ReactChartist in react-chartist), but that's only for chartist, not the plugin:

        <ReactChartist
          // chart data (required)
          data={data}
          // chart options (optional)
          options={options}
          // chart type (required)
          type={type}
          // chart responsive options (optional)
          // responsiveOptions={responsiveOptions}
          // set callbacks for animations using a listener, see: https://github.com/fraserxu/react-chartist/issues/27
          listener={animation}
        />