feat: add user defined translations (#1756)

* feat: add user defined translations

* add refetch key for translation (#1757)

---------

Co-authored-by: Alex Christoffer Rasmussen <ac@omnivox.dk>

apps/server/src/user/translations/README.md

@@ -0,0 +1,4 @@
+# translations
+
+The translations folder contain the user's custom translations which is used for custom translations in Ontime.
+The file should be named `translations.json`.

apps/server/src/user/translations/bundledTranslations.ts

@@ -0,0 +1,3 @@
+import { langEn } from 'ontime-types';
+
+export const defaultTranslation = JSON.stringify(langEn, null, 2);