#414 Move sender and subscriber to services

api/src/main/java/fitconnect/api/Sender.java → api/src/main/java/fitconnect/api/services/Sender.java

-package fitconnect.api;
+package fitconnect.api.services;
 
 import com.nimbusds.jose.jwk.RSAKey;
 import fitconnect.api.domain.auth.OAuthToken;

api/src/main/java/fitconnect/api/Subscriber.java → api/src/main/java/fitconnect/api/services/Subscriber.java

-package fitconnect.api;
+package fitconnect.api.services;
 
 import com.nimbusds.jose.jwk.RSAKey;
 import fitconnect.api.domain.auth.OAuthToken;

client/src/main/java/de/fitconnect/client/ClientFactory.java

 package de.fitconnect.client;
 
-import fitconnect.api.Sender;
-import fitconnect.api.Subscriber;
+import fitconnect.api.services.Sender;
+import fitconnect.api.services.Subscriber;
 import fitconnect.api.services.auth.OAuthService;
 import fitconnect.api.services.crypto.CryptoService;
 import fitconnect.api.services.validation.CertificateValidator;

client/src/main/java/de/fitconnect/client/FitConnectClient.java

 package de.fitconnect.client;
 
-import fitconnect.api.Sender;
+import fitconnect.api.services.Sender;
 import fitconnect.api.domain.auth.OAuthToken;
 import fitconnect.api.domain.model.metadata.Metadata;
 import fitconnect.api.domain.model.metadata.attachment.Attachment;

impl/src/main/java/fitconnect/impl/SubmissionSender.java

 package fitconnect.impl;
 
 import com.nimbusds.jose.jwk.RSAKey;
-import fitconnect.api.Sender;
+import fitconnect.api.services.Sender;
 import fitconnect.api.services.auth.OAuthService;
 import fitconnect.api.domain.auth.OAuthToken;
 import fitconnect.api.services.crypto.CryptoService;

impl/src/main/java/fitconnect/impl/SubmissionSubscriber.java

 package fitconnect.impl;
 
 import com.nimbusds.jose.jwk.RSAKey;
-import fitconnect.api.Subscriber;
+import fitconnect.api.services.Subscriber;
 import fitconnect.api.services.auth.OAuthService;
 import fitconnect.api.domain.auth.OAuthToken;
 import fitconnect.api.services.crypto.CryptoService;

impl/src/test/java/fitconnect/impl/auth/OAuthTokenIntegrationTest.java

 package fitconnect.impl.auth;
 
-import fitconnect.api.Sender;
+import fitconnect.api.services.Sender;
 import fitconnect.api.domain.auth.OAuthToken;
 import fitconnect.impl.SubmissionSender;
 import org.junit.jupiter.api.Test;