feat: add admin content module pages

src/app/admin/layout.tsx

@@ -72,6 +72,10 @@ function getNavGroups(t: (key: string) => string) {
         { href: "/admin/writeable-boxes", label: t("writeableBoxes"), icon: <SquarePen size={16} /> },
         { href: "/admin/photos", label: t("photos"), icon: <Image size={16} /> },
         { href: "/admin/tickets", label: t("tickets"), icon: <MessageSquare size={16} /> },
+        { href: "/admin/events", label: "Events", icon: <Calendar size={16} /> },
+        { href: "/admin/polls", label: "Polls", icon: <ClipboardList size={16} /> },
+        { href: "/admin/banners", label: "Banners", icon: <Image size={16} /> },
+        { href: "/admin/prefixes", label: "Prefixes", icon: <Languages size={16} /> },
       ],
     },
     {