Feature/support localization in date fns (#1195)

* Add locale to date-fns (formatDistanceToNow)

* Update changelog

libs/common/src/lib/helper.ts

@@ -1,6 +1,7 @@
 import * as currencies from '@dinero.js/currencies';
 import { DataSource } from '@prisma/client';
 import { getDate, getMonth, getYear, parse, subDays } from 'date-fns';
+import { de } from 'date-fns/locale';
 
 import { ghostfolioScraperApiSymbolPrefix, locale } from './config';
 import { Benchmark } from './interfaces';
@@ -56,6 +57,14 @@ export function getCssVariable(aCssVariable: string) {
   );
 }
 
+export function getDateFnsLocale(aLanguageCode: string) {
+  if (aLanguageCode === 'de') {
+    return de;
+  }
+
+  return undefined;
+}
+
 export function getDateFormatString(aLocale?: string) {
   const formatObject = new Intl.DateTimeFormat(aLocale).formatToParts(
     new Date()