Add Logto to Authentication and Authorization

Logto is an open-source Auth0, Cognito and Firebase auth alternative for modern apps and SaaS products, supporting OIDC, OAuth 2.0 and SAML open standards for authentication and authorization.

Logto supports a dedicated PHP SDK: https://github.com/logto-io/php (https://docs.logto.io/quick-starts/php)

Website: https://logto.io
GitHub: https://logto-io/logto
Docs: https://docs.logto.io

README.md

@@ -647,6 +647,7 @@ Libraries to help manage database schemas and migrations.
 * [Aura.Auth](https://github.com/auraphp/Aura.Auth) - Provides authentication functionality and session tracking using various adapters.
 * [SocialConnect Auth](https://github.com/socialConnect/auth) - An open source social sign (OAuth1\OAuth2\OpenID\OpenIDConnect).
 * [Json Web Token](https://github.com/lcobucci/jwt) - Json Tokens to authenticate and transmit information.
+* [Logto](https://github.com/logto-io/logto) - An IAM service with AuthN, AuthZ, MFA, SSO, multi-tenancy, and user management.
 * [OAuth 1.0 Client](https://github.com/thephpleague/oauth1-client) - An OAuth 1.0 client library.
 * [OAuth 2.0 Client](https://github.com/thephpleague/oauth2-client) - An OAuth 2.0 client library.
 * [OAuth2 Server](https://bshaffer.github.io/oauth2-server-php-docs/) - Another OAuth2 server implementation.