contacts: add sync API

...tore/src/main/java/net/jami/datastore/dao/ContactDao.java

...n/java/net/jami/jams/common/objects/contacts/Contact.java

.../net/jami/jams/common/serialization/JsoniterRegistry.java

...i/jams/common/serialization/serializers/ContactCodec.java

...c/main/java/net/jami/jams/common/utils/ContactMerger.java

...va/net/jami/jams/common/objects/contacts/ContactTest.java

jams-launcher/src/main/java/launcher/AppStarter.java

...ams/server/servlets/api/auth/contacts/ContactServlet.java

.../jami/jams/ldap/connector/service/UserProfileService.java