feat: allow setting dashboard scripts from super_admin (#9514)

This PR allows setting scripts for `vueapp.html.erb` via super admin
config. This PR has the following changes

1. Allow `DASHBOARD_SCRIPTS` in internal config
2. Remove existing scripts from `vueapp.html.erb`
3. Add scripts from `GlobalConfig` to `vueapp.html.erb`

---------

Co-authored-by: Muhsin Keloth <muhsinkeramam@gmail.com>

app/controllers/dashboard_controller.rb

@@ -3,6 +3,7 @@ class DashboardController < ActionController::Base
 
   before_action :set_application_pack
   before_action :set_global_config
+  before_action :set_dashboard_scripts
   around_action :switch_locale
   before_action :ensure_installation_onboarding, only: [:index]
   before_action :render_hc_if_custom_domain, only: [:index]
@@ -35,6 +36,10 @@ class DashboardController < ActionController::Base
     ).merge(app_config)
   end
 
+  def set_dashboard_scripts
+    @dashboard_scripts = GlobalConfig.get_value('DASHBOARD_SCRIPTS')
+  end
+
   def ensure_installation_onboarding
     redirect_to '/installation/onboarding' if ::Redis::Alfred.get(::Redis::Alfred::CHATWOOT_INSTALLATION_ONBOARDING)
   end