feat: user_id to auth event logging db table

lib/Auth/Process/AuthEventLogging.php

@@ -7,6 +7,7 @@ namespace SimpleSAML\Module\perun\Auth\Process;
 use DateTime;
 use SimpleSAML\Auth\ProcessingFilter;
 use SimpleSAML\Configuration;
+use SimpleSAML\Module\perun\PerunConstants;
 use SimpleSAML\Session;
 use SimpleSAML\Logger;
 use SimpleSAML\Error\Exception;
@@ -156,7 +157,8 @@ class AuthEventLogging extends ProcessingFilter
             'requested_acrs_id' => $requestedACRsTableId,
             'upstream_acrs_id' => $upstreamACRsTableId,
             'user_agent_raw_id' => $userAgentRawTableId,
-            'user_agent_id' => $userAgentTableId
+            'user_agent_id' => $userAgentTableId,
+            'user_id' => $request[PerunConstants::PERUN][PerunConstants::USER]->getId(),
         ]);
     }