Adds initial intermediate qt6 porting state

qt6-after/qt6-migrated-legatus/TetraIF/LogView/LogViewSpinBox.hpp

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+#pragma once
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+#include <QSpinBox>
+#include "LogViewWidget.hpp"
+
+namespace N_LogView
+{
+  
+
+  class LogViewSpinBox : public QSpinBox, public LogViewWidget
+  {
+    Q_OBJECT
+  public:
+    
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+    LogViewSpinBox(LogViewField* a_field, QWidget* a_parent, const int a_value);
+
+    
+
+    bool saveContent(LogViewTelegram* a_telegram) override;
+
+  protected slots:
+    void finishEditing();
+
+  signals:
+    
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+    void valueEditingFinished(int a_newValue);
+
+  };
+
+}