import { CustomItemService } from "https://deno.land/x/sptaki@1.2.0/services/mod.ts";
Iterate through the passed in locale data and add to each locale in turn If data is not provided for each langauge eft uses, the first object will be used in its place e.g. en[0] fr[1]
No jp provided, so english will be used as a substitute
Parameters
localeDetails: Record<string, LocaleDetails>
key is language, value are the new locale details