Add omniauth saml section for sign in and sign up page

Co-authored-by: Anamika Aggarwal <anamikaagg18@gmail.com>

config/initializers/devise.rb

@@ -286,6 +286,10 @@ Devise.setup do |config|
                   Rails.application.secrets.wordpress_oauth2_secret,
                   client_options: { site: Rails.application.secrets.wordpress_oauth2_site },
                   setup: ->(env) { OmniauthTenantSetup.wordpress_oauth2(env) }
+  config.omniauth :saml,
+                  sp_entity_id: Rails.application.secrets.saml_sp_entity_id,
+                  idp_cert: Rails.application.secrets.saml_idp_cert,
+                  idp_sso_service_url: Rails.application.secrets.saml_idp_sso_service_url
 
   # ==> Warden configuration
   # If you want to use other strategies, that are not supported by Devise, or