feat: add create room service

Author: AndreaGiulianelli

src/main/kotlin/application/service/Service.kt

@@ -0,0 +1,37 @@
+/*
+ * Copyright (c) 2023. Smart Operating Block
+ *
+ * Use of this source code is governed by an MIT-style
+ * license that can be found in the LICENSE file or at
+ * https://opensource.org/licenses/MIT.
+ */
+
+package application.service
+
+import entity.zone.Room
+import usecase.repository.RoomRepository
+
+/**
+ * Module that wraps all the services that orchestrate the application logic (not domain one).
+ */
+object Service {
+    /**
+     * Interface that models an Application Service.
+     * An Application Service handle application logic without business elements.
+     * @param[T] the type returned by the service.
+     */
+    interface ApplicationService<out T> {
+        /**
+         * Method to execute the application service.
+         * @return the result of type [T]
+         */
+        fun execute(): T
+    }
+
+    /**
+     * Application Service that has the objective of creating a [room] using the [roomRepository] passed.
+     */
+    class CreateRoom(private val room: Room, private val roomRepository: RoomRepository) : ApplicationService<Room?> {
+        override fun execute(): Room? = this.roomRepository.createRoom(room)
+    }
+}