feat: Super admin design improvements (#8517)

- Revamp the super admin design
- Introduce a new settings page for support and billing settings
- Move the access tokens into users, agent bots and platform app show pages


Co-authored-by: Sojan <sojan@pepalo.com>
Co-authored-by: Pranav Raj S <pranav@chatwoot.com>

config/routes.rb

@@ -444,6 +444,10 @@ Rails.application.routes.draw do
       resources :platform_apps, only: [:index, :new, :create, :show, :edit, :update]
       resource :instance_status, only: [:show]
 
+      resource :settings, only: [:show] do
+        get :refresh, on: :collection
+      end
+
       # resources that doesn't appear in primary navigation in super admin
       resources :account_users, only: [:new, :create, :destroy]
     end