Suggested rooms spaces

Add the ability to set and show suggested rooms for spaces. 

This is just adding the basic functionality, we can do more things with it later like sort/filter the space home for example.

src/models/spacetreeitem.h

@@ -2,6 +2,7 @@
 // SPDX-License-Identifier: GPL-2.0-only OR GPL-3.0-only OR LicenseRef-KDE-Accepted-GPL
 
 #include <Quotient/csapi/space_hierarchy.h>
+#include <Quotient/events/stateevent.h>
 
 class NeoChatConnection;
 
@@ -30,7 +31,8 @@ public:
                            const QUrl &avatarUrl = {},
                            bool allowGuests = {},
                            bool worldReadable = {},
-                           bool isSpace = {});
+                           bool isSpace = {},
+                           Quotient::StateEvents childStates = {});
     ~SpaceTreeItem();
 
     /**
@@ -60,7 +62,7 @@ public:
     /**
      * @brief Return this item's parent.
      */
-    SpaceTreeItem *parentItem();
+    SpaceTreeItem *parentItem() const;
 
     /**
      * @brief Return the row number for this child relative to the parent.
@@ -123,6 +125,23 @@ public:
      */
     bool isSpace() const;
 
+    /**
+     * @brief Return the m.space.child state event content for the given child.
+     */
+    QJsonObject childStateContent(const SpaceTreeItem *child) const;
+
+    /**
+     * @brief Set the list of m.space.child events.
+     *
+     * Overwrites existing states. Calling with no input will clear the existing states.
+     */
+    void setChildStates(Quotient::StateEvents childStates = {});
+
+    /**
+     * @brief Whether the room is suggested in the parent space.
+     */
+    bool isSuggested() const;
+
 private:
     NeoChatConnection *m_connection;
     QList<SpaceTreeItem *> m_children;
@@ -137,4 +156,5 @@ private:
     bool m_allowGuests;
     bool m_worldReadable;
     bool m_isSpace;
+    Quotient::StateEvents m_childStates;
 };