Добавлены классы для пакетов и паттернов

src/main/java/ru/serega6531/packmate/model/CtfService.java

@@ -0,0 +1,23 @@
+package ru.serega6531.packmate.model;
+
+import lombok.Data;
+
+import javax.persistence.CascadeType;
+import javax.persistence.Entity;
+import javax.persistence.Id;
+import javax.persistence.OneToMany;
+import java.util.List;
+
+@Data
+@Entity
+public class CtfService {
+
+    @Id
+    private int port;
+
+    private String name;
+
+    @OneToMany(mappedBy = "service", cascade = CascadeType.ALL, orphanRemoval = true)
+    private List<Stream> streams;
+
+}