Added Java type Config Object to get chart URL instead of providing non-formatted json string

[nimxch]

If user want to provide your Chart.js config in a neat manner instead of doing all the string formatting, you can use getUrlV2()

Example:

// Instanciate ChartConfig objectChartConfigconfig = newChartConfig();
// Set the char type. e.g bar, line etcconfig.setType("bar");
//Instantiate ChartDataChartDatadata = newChartData();
// Set the labels and chart Datadata.setLabels(List.of("Q1", "Q2", "Q3", "Q4")); //labels//Dataset 1Datasetdataset = newDataset();
dataset.setLabel("Users");
dataset.setData(List.of("50", "60", "70", "180"));
//Dataset 2Datasetdataset2 = newDataset();
dataset2.setLabel("Revenue");
dataset2.setData(List.of("100", "200", "300", "400"));
//Set the required Datadata.setDatasets(List.of(dataset, dataset2));
config.setData(data);
chart.setChartConfig(config);
//get the URLchart.getUrlV2()