feat: add saml custom attribute action and translations (#6341)

* feat: add saml custom attribute action and translations

* chore: update saml dependency

* fix: apply suggestions from code review

Co-authored-by: Livio Spring <livio.a@gmail.com>

* fix: custom attribute action with variadic parameter

* docs: add customize saml response docs

* docs: update docs/docs/apis/actions/customize-samlresponse.md

Co-authored-by: Livio Spring <livio.a@gmail.com>

* docs: update docs/docs/apis/actions/customize-samlresponse.md

Co-authored-by: Livio Spring <livio.a@gmail.com>

---------

Co-authored-by: Livio Spring <livio.a@gmail.com>

docs/docs/apis/actions/customize-samlresponse.md

@@ -0,0 +1,28 @@
+---
+title: Complement SAMLResponse
+---
+
+This flow is executed before the return of the SAMLResponse.
+
+## Pre SAMLResponse creation
+
+This trigger is called before attributes are set in the SAMLResponse.
+
+### Parameters of Pre SAMLResponse creation
+
+- `ctx`  
+  The first parameter contains the following fields:
+  - `v1`
+    - `getUser()` [*User*](./objects#user)
+    - `user`
+      - `getMetadata()` [*metadataResult*](./objects#metadata-result)
+      - `grants` [*UserGrantList*](./objects#user-grant-list)
+- `api`  
+  The second parameter contains the following fields:
+  - `v1`
+    - `attributes`
+      - `setCustomAttribute(string, string, ...string)`  
+        Sets any value as attribute in addition to the default attributes, if the key is not already present. The parameters represent the key, nameFormat and the attributeValue(s).
+    - `user`
+      - `setMetadata(string, Any)`  
+        Key of the metadata and any value

docs/sidebars.js

@@ -566,6 +566,7 @@ module.exports = {
         "apis/actions/internal-authentication",
         "apis/actions/external-authentication",
         "apis/actions/complement-token",
+        "apis/actions/customize-samlresponse",
         "apis/actions/objects",
       ]
     },