feat(i18n): add Japanese (ja) translations

apps/client/project.json

@@ -26,6 +26,10 @@
         "baseHref": "/it/",
         "translation": "apps/client/src/locales/messages.it.xlf"
       },
+      "ja": {
+        "baseHref": "/ja/",
+        "translation": "apps/client/src/locales/messages.ja.xlf"
+      },
       "ko": {
         "baseHref": "/ko/",
         "translation": "apps/client/src/locales/messages.ko.xlf"

apps/client/src/app/components/user-account-settings/user-account-settings.component.ts

@@ -91,6 +91,7 @@ export class GfUserAccountSettingsComponent implements OnInit {
     'es',
     'fr',
     'it',
+    'ja',
     'ko',
     'nl',
     'pl',

libs/common/src/lib/config.ts

@@ -314,6 +314,7 @@ export const SUPPORTED_LANGUAGE_CODES = [
   'es',
   'fr',
   'it',
+  'ja',
   'ko',
   'nl',
   'pl',

libs/common/src/lib/helper.ts

@@ -23,6 +23,7 @@ import {
   es,
   fr,
   it,
+  ja,
   ko,
   nl,
   pl,
@@ -262,6 +263,8 @@ export function getDateFnsLocale(aLanguageCode?: string) {
     return fr;
   } else if (aLanguageCode === 'it') {
     return it;
+  } else if (aLanguageCode === 'ja') {
+    return ja;
   } else if (aLanguageCode === 'ko') {
     return ko;
   } else if (aLanguageCode === 'nl') {