Merged in feature/refactor-lang (pull request #387)

feat: SW-238 Avoid prop drilling of lang

Approved-by: Michael Zetterberg

i18n/serverContext.ts

@@ -0,0 +1,22 @@
+import { cache } from "react"
+
+import { Lang } from "@/constants/languages"
+
+const getRef = cache(() => ({ current: Lang.en }))
+
+/**
+ * Set the language for the current request
+ *
+ * It works kind of like React's context,
+ * but on the server side, per request.
+ *
+ * @param newLang
+ */
+export const setLang = (newLang: Lang) => {
+  getRef().current = newLang
+}
+
+/**
+ * Get the global language set for the current request
+ */
+export const getLang = () => getRef().current