add example for Entra ID with SAML (#7732)

* start example for entra id saml

* updates

* rm unused images

Author: josefaidt

public/images/auth/examples/microsoft-entra-id-saml/cognito-view-signing-certificate.png

@@ -168,6 +168,14 @@ export const directory = {
                 {
                   path: 'src/pages/[platform]/build-a-backend/auth/data-usage-policy/index.mdx'
                 },
+                {
+                  path: 'src/pages/[platform]/build-a-backend/auth/examples/index.mdx',
+                  children: [
+                    {
+                      path: 'src/pages/[platform]/build-a-backend/auth/examples/microsoft-entra-id-saml/index.mdx'
+                    }
+                  ]
+                },
                 {
                   path: 'src/pages/[platform]/build-a-backend/auth/grant-access-to-auth-resources/index.mdx'
                 },