Feature/add interface (#16)

* Add interface

* Add interface

src/Service/VerificationServiceInterface.php

@@ -2,28 +2,11 @@
 
 declare(strict_types=1);
 
-/**
- * Copyright 2024 SURFnet B.V.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
 namespace Surfnet\YubikeyApiClient\Service;
 
-use Surfnet\YubikeyApiClient\Exception\RequestResponseMismatchException;
-use Surfnet\YubikeyApiClient\Exception\UntrustedSignatureException;
 use Surfnet\YubikeyApiClient\Otp;
 
 interface VerificationServiceInterface
 {
+    public function verify(Otp $otp): OtpVerificationResult;
 }