added factory method for oidc

Author: transistive

src/Authentication/Authenticate.php

@@ -40,6 +40,16 @@ public static function kerberos(string $token): KerberosAuth
         return new KerberosAuth($token);
     }
 
+    /**
+     * Authenticate using a kerberos token.
+     *
+     * @pure
+     */
+    public static function oidc(string $token): OpenIDConnectAuth
+    {
+        return new OpenIDConnectAuth($token);
+    }
+
     /**
      * Don't authenticate at all.
      *