chore: create room event presence payload

Author: AndreaGiulianelli

src/env/application/presenter/event/model/roomevent/payload/PresencePayload.java

@@ -0,0 +1,32 @@
+/*
+ * 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.presenter.event.model.roomevent.payload;
+
+/**
+ * Presence payload for {@link application.presenter.event.model.roomevent.RoomEvent}.
+ */
+public class PresencePayload implements RoomEventPayload {
+    private final boolean presenceDetected;
+
+    /**
+     * Default constructor.
+     * @param presenceDetected the presence payload.
+     */
+    public PresencePayload(final boolean presenceDetected) {
+        this.presenceDetected = presenceDetected;
+    }
+
+    /**
+     * State if the presence is detected or not.
+     * @return true if the presence is detected, false otherwise.
+     */
+    public boolean isPresenceDetected() {
+        return this.presenceDetected;
+    }
+}