Create NeochatRoomMember as a shim for RoomMember

The intention is that NeochatRoomMember can be created passed to QML and then be fully managed by it. It effectively just grabs the current RoomMember, calls the correct function then discards it so that we don't end up trying to access an already deleted state event.

src/roommanager.cpp

@@ -11,6 +11,7 @@
 #include "neochatconfig.h"
 #include "neochatconnection.h"
 #include "neochatroom.h"
+#include "neochatroommember.h"
 #include "spacehierarchycache.h"
 #include "urlhelper.h"
 
@@ -184,7 +185,7 @@ void RoomManager::maximizeMedia(int index)
     Q_EMIT showMaximizedMedia(index);
 }
 
-void RoomManager::maximizeCode(const RoomMember &author, const QDateTime &time, const QString &codeText, const QString &language)
+void RoomManager::maximizeCode(NeochatRoomMember *author, const QDateTime &time, const QString &codeText, const QString &language)
 {
     if (codeText.isEmpty()) {
         return;
@@ -202,14 +203,14 @@ void RoomManager::viewEventSource(const QString &eventId)
     Q_EMIT showEventSource(eventId);
 }
 
-void RoomManager::viewEventMenu(const QString &eventId, NeoChatRoom *room, const QString &selectedText)
+void RoomManager::viewEventMenu(const QString &eventId, NeoChatRoom *room, NeochatRoomMember *sender, const QString &selectedText)
 {
     const auto &event = **room->findInTimeline(eventId);
     const auto eventHandler = EventHandler(room, &event);
 
     if (eventHandler.getMediaInfo().contains("mimeType"_ls)) {
         Q_EMIT showFileMenu(eventId,
-                            eventHandler.getAuthor(),
+                            sender,
                             eventHandler.messageComponentType(),
                             eventHandler.getPlainBody(),
                             eventHandler.getMediaInfo()["mimeType"_ls].toString(),
@@ -217,12 +218,7 @@ void RoomManager::viewEventMenu(const QString &eventId, NeoChatRoom *room, const
         return;
     }
 
-    Q_EMIT showMessageMenu(eventId,
-                           eventHandler.getAuthor(),
-                           eventHandler.messageComponentType(),
-                           eventHandler.getPlainBody(),
-                           eventHandler.getRichBody(),
-                           selectedText);
+    Q_EMIT showMessageMenu(eventId, sender, eventHandler.messageComponentType(), eventHandler.getPlainBody(), eventHandler.getRichBody(), selectedText);
 }
 
 bool RoomManager::hasOpenRoom() const