feat: enhance GlobalStoreProvider and MovieList components with display type management and loading spinner; integrate local storage for display preferences and improve user experience during initial render

src/components/organisms/Navbar/index.tsx

@@ -1,7 +1,7 @@
 "use client";
 import Link from "next/link";
 import { useState } from "react";
-import { HiSearch, HiHome, HiViewGrid } from "react-icons/hi";
+import { HiSearch, HiHome, HiSparkles } from "react-icons/hi";
 import { Search } from "./components/Search";
 import { usePathname } from "next/navigation";
 
@@ -17,7 +17,7 @@ const navigationItems = [
   {
     label: "Odkrywaj",
     href: "/odkrywaj",
-    icon: HiViewGrid,
+    icon: HiSparkles,
     emoji: "🎬",
     color: "from-purple-500 to-pink-600",
     description: "Znajdź nowe filmy",