Added jotai (#14)

* Added jotai

* cache settings by using jotai state

* use hydrateAtom with SSR

* remove useSettings

* fix test

components/jotai-providers.tsx

@@ -0,0 +1,11 @@
+'use client'
+
+import { Provider } from 'jotai'
+
+export const JotaiProvider = ({ children }: { children: React.ReactNode }) => {
+  return (
+    <Provider>
+      {children}
+    </Provider>
+  )
+}