Implemented oauth session revocation notification.

Reworked webhooks notifications constructors

common/notifications/OAuthSessionRevokedNotification.php

@@ -0,0 +1,30 @@
+<?php
+declare(strict_types=1);
+
+namespace common\notifications;
+
+use common\models\OauthSession;
+use Webmozart\Assert\Assert;
+
+final class OAuthSessionRevokedNotification implements NotificationInterface {
+
+    private OauthSession $oauthSession;
+
+    public function __construct(OauthSession $oauthSession) {
+        Assert::notNull($oauthSession->revoked_at, 'OAuth session must be revoked');
+        $this->oauthSession = $oauthSession;
+    }
+
+    public static function getType(): string {
+        return 'oauth2.session_revoked';
+    }
+
+    public function getPayloads(): array {
+        return [
+            'accountId' => $this->oauthSession->account_id,
+            'clientId' => $this->oauthSession->client_id,
+            'revoked' => date('c', $this->oauthSession->revoked_at),
+        ];
+    }
+
+}