Add favicon upload option in admin panel

src/app/admin/layout.tsx

@@ -81,6 +81,7 @@ function getNavGroups(t: (key: string) => string) {
         { href: "/admin/email-templates", label: t("emailTemplates"), icon: <Mail size={16} /> },
         { href: "/admin/theme", label: t("theme"), icon: <Palette size={16} /> },
         { href: "/admin/media", label: t("media"), icon: <Image size={16} /> },
+        { href: "/admin/favicon", label: t("favicon"), icon: <Image size={16} /> },
         { href: "/admin/settings", label: t("settings"), icon: <Cog size={16} /> },
       ],
     },