🚀 feat: Banner (#3952)

* feat: Add banner schema and model

* feat: Add optional JwtAuth

To handle the conditional logic with and without authentication within the model.

* feat: Add an endpoint to retrieve a banner

* feat: Add implementation for client to use banner and access API

* feat: Display a banner on UI

* feat: Script for updating and deleting banners

* style: Update banner style

* fix: Adjust the height when the banner is displayed

* fix: failed specs

client/src/components/Auth/AuthLayout.tsx

@@ -3,6 +3,7 @@ import { BlinkAnimation } from './BlinkAnimation';
 import { TStartupConfig } from 'librechat-data-provider';
 import SocialLoginRender from './SocialLoginRender';
 import { ThemeSelector } from '~/components/ui';
+import { Banner } from '../Banners';
 import Footer from './Footer';
 
 const ErrorRender = ({ children }: { children: React.ReactNode }) => (
@@ -56,6 +57,7 @@ function AuthLayout({
 
   return (
     <div className="relative flex min-h-screen flex-col bg-white dark:bg-gray-900">
+      <Banner />
       <BlinkAnimation active={isFetching}>
         <div className="mt-6 h-10 w-full bg-cover">
           <img src="/assets/logo.svg" className="h-full w-full object-contain" alt="Logo" />