feat: add user auth dao

persistence/src/main/java/cz/muni/fi/pa165/icehockeymanager/dao/UserAuthDao.java

+package cz.muni.fi.pa165.icehockeymanager.dao;
+
+import cz.muni.fi.pa165.icehockeymanager.model.User;
+import org.springframework.stereotype.Repository;
+
+@Repository
+public class UserAuthDao extends AbstractDao<User>{
+
+    public UserAuthDao() {
+        super(User.class);
+    }
+}