Create new rooms module

src/libneochat/enums/roomsortorder.h

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+// SPDX-FileCopyrightText: 2025 James Graham <james.h.graham@protonmail.com>
+// SPDX-License-Identifier: GPL-2.0-only OR GPL-3.0-only OR LicenseRef-KDE-Accepted-GPL
+
+#pragma once
+
+#include <QObject>
+#include <QQmlEngine>
+
+/**
+ * @class RoomSortOrder
+ *
+ * This class is designed to define the RoomSortOrder enumeration.
+ */
+class RoomSortOrder : public QObject
+{
+    Q_OBJECT
+    QML_ELEMENT
+    QML_UNCREATABLE("")
+
+public:
+    /**
+     * @brief The types of messages that can be shown.
+     */
+    enum Order {
+        Alphabetical = 0, /**< The room should be sorted alphabetically. */
+        Activity, /**< The room should be sorted by important activity. */
+        LastMessage, /**< The room should be sorted by last message in the room. */
+        Custom, /**< Use a custom sort order. */
+    };
+    Q_ENUM(Order);
+};