refactor docs into feature folder

src/features/docs/hooks/useDocsLanguage.ts

@@ -0,0 +1,12 @@
+import { useContext } from "react";
+import { DocsLanguageContext } from "@/features/docs/contexts/DocsLanguageContext";
+
+export function useDocsLanguage() {
+  const context = useContext(DocsLanguageContext);
+
+  if (!context) {
+    throw new Error("useDocsLanguage must be used inside DocsLanguageProvider");
+  }
+
+  return context;
+}