SUPPORT-8724: number to local string formatter

frontend/src/ts/ervu_business_metrics/formatter/NumberToLocalStringFormatter.ts

@@ -0,0 +1,10 @@
+import {TextFormatter} from "@webbpm/base-package";
+
+export class NumberToLocalStringFormatter implements TextFormatter {
+  public locale: string;
+
+  format(value: string): string {
+    const numberValue = Number(value);
+    return this.locale ? numberValue.toLocaleString(this.locale) : numberValue.toLocaleString();
+  }
+}