feat(chart): Added optional id to data (#34)

This id is copied over to onClick responses by recharts which helps
recognize keys that are different from title such as translation.

src/types/chartTypes.ts

@@ -7,6 +7,7 @@ export type CategoricalChartDataType = CategoricalChartDataItem[];
 export interface CategoricalChartDataItem {
   x: string;
   y: number;
+  id?: string;
 }
 
 export type TooltipPayload = TooltipPayloadItem[];