🚀 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

api/server/routes/index.js

@@ -24,6 +24,7 @@ const edit = require('./edit');
 const keys = require('./keys');
 const user = require('./user');
 const ask = require('./ask');
+const banner = require('./banner');
 
 module.exports = {
   ask,
@@ -52,4 +53,5 @@ module.exports = {
   assistants,
   categories,
   staticRoute,
+  banner,
 };