Bar chart plot options should allow for range of colors like JavaScript API

[Obi-TP]

Is your feature request related to a problem? Please describe.
com.github.appreciated.apexcharts.config.plotoptions.bar.Colors.setRanges(Ranges) is not consistent with JavaScript API. It should accept a var array (or collection of colors).

Describe the solution you'd like
Change the API to accept an array of colors.

Additional context
I am happy to contribute a solution if you will accept a Pull Request. See excerpt below.

package com.github.appreciated.apexcharts.config.plotoptions.bar;

import java.util.List;

public class Colors {
    private Ranges[] ranges;
    private List<String> backgroundBarColors;
    private Double backgroundBarOpacity;

    public Colors() {
    }

    public Ranges[] getRanges() {
        return ranges;
    }

    public List<String> getBackgroundBarColors() {
        return backgroundBarColors;
    }

    public Double getBackgroundBarOpacity() {
        return backgroundBarOpacity;
    }

    public void setRanges(Ranges ...ranges) {
        this.ranges = ranges;
    }

    public void setBackgroundBarColors(List<String> backgroundBarColors) {
        this.backgroundBarColors = backgroundBarColors;
    }

    public void setBackgroundBarOpacity(Double backgroundBarOpacity) {
        this.backgroundBarOpacity = backgroundBarOpacity;
    }

}

[appreciated]

@Obi-TP I would be glad if you could provide a PR for this.