Adds initial intermediate qt6 porting state

qt6-after/qt6-migrated-legatus/Lts/DDS/FTC/generic_ftc.h

@@ -0,0 +1,28 @@
+
+
+
+#pragma once
+
+#include <DDS/Core/core.hpp>
+
+#include <future>
+
+class Request2;
+
+namespace FTC
+{
+
+template <typename RequestTopicType, typename ReplyTopicType>
+class GenericFtc
+{
+public:
+  GenericFtc() = default;
+  virtual ~GenericFtc() = default;
+
+  virtual bool requestDataClassic(const RequestTopicType &data,
+                           const char *replySlot,
+                           const char *errorSlot,
+                           int &uniqueId) = 0;
+  virtual std::future<ReplyTopicType> requestDataModern(const RequestTopicType &requestTopic, Request2 *requestWatcher) = 0;
+};
+}