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>

spec/controllers/super_admin/instance_statuses_controller_spec.rb

@@ -1,6 +1,6 @@
 require 'rails_helper'
 
-RSpec.describe 'Super Admin Instance health', type: :request do
+RSpec.describe 'Super Admin Instance status', type: :request do
   let(:super_admin) { create(:super_admin) }
 
   describe 'GET /super_admin/instance_status' do