Provide examples for BrushChart

[avglsscheffler]

Hi there,
I am trying to setup a brush chart(https://apexcharts.com/javascript-chart-demos/line-charts/brush-chart/) with your lib.
There is code (builders, classes etc.) in your repo.
Howerver, i am not able make it work.

I always end up with an error 'ApexCharts is not defined'.
Can you please provide an example or a code snipped how it should be done propperly?

Code Example:

            .withChart(ChartBuilder.get()
                    .withType(Type.LINE)
                    .withId("bigChart")
                    .build())
            .withSeries(new Series("test", 1, 2, 3))
            .build();
        add(apexChart);
        final ApexCharts brushChart = bigApexChartsBuilder
                .withChart(ChartBuilder.get()
                        .withId("brushChart")
                        .withType(Type.AREA)
                        .withBrush(BrushBuilder.get()
                                .withEnabled(true)
                                .withTarget("bigChart")
                                .build())
                        .build())
                .build();
        add(brushChart);```
![Auswahl_013](https://github.com/appreciated/apexcharts-flow/assets/129512326/e1f56b91-9020-4c51-880a-ecbfa2941095)