feat: add react-hot-toast in admin and news layouts, and update ads form handling

app/layouts/admin/default.tsx

@@ -1,10 +1,12 @@
 import type { PropsWithChildren } from 'react'
+import { Toaster } from 'react-hot-toast'
 
 export const AdminDefaultLayout = (properties: PropsWithChildren) => {
   const { children } = properties
   return (
     <main className="font-admin relative min-h-dvh bg-[#F7F8FC]">
       {children}
+      <Toaster />
     </main>
   )
 }

app/layouts/news/default.tsx

@@ -1,4 +1,5 @@
 import { type PropsWithChildren } from 'react'
+import { Toaster } from 'react-hot-toast'
 
 import { PopupModal } from '~/components/popup/modal'
 import { SuccessModal } from '~/components/popup/success-modal'
@@ -44,6 +45,8 @@ export const NewsDefaultLayout = (properties: PropsWithChildren) => {
         <FooterLinks />
       </footer>
 
+      <Toaster />
+
       <PopupModal
         isOpen={isLoginOpen}
         onClose={() => setIsLoginOpen(false)}