utility class for proxy, configurable lists of AuthnContextClassRefs

Created by: melanger

config-templates/module_authswitcher.php

+<?php
+
+declare(strict_types=1);
+
+$config = [
+    'type_filter_array' => [
+        'TOTP' => 'privacyidea:PrivacyideaAuthProc',
+        'WebAuthn' => 'privacyidea:PrivacyideaAuthProc',
+    ],
+    'token_type_attr' => 'type',
+    'preferred_filter' => 'privacyidea:PrivacyideaAuthProc',
+    'max_user_capability_attr' => 'maxUserCapability',
+    'max_auth' => 'https://id.muni.cz/profile/maxAuth',
+    //'password_contexts' => array_merge(AuthSwitcher::PASSWORD_CONTEXTS, [
+    //    'my-custom-authn-context-for-password',
+    //    '/^my-regex-.*/',
+    //]),
+    //'mfa_contexts' => array_merge(AuthSwitcher::MFA_CONTEXTS, [
+    //    'my-custom-authn-context-for-mfa',
+    //]),
+    //'contexts_regex' => true,
+];