Move stream operator from AppEnum header

This PR will reduce the compile time of code using AppEnum. 

* AppEnum: Move QTextStream operator to avoid include of QTextStream
* Avoid use of iostream in cafAssert
rator to avoid include of QTextStream

Include file profiling shows that include of QTextStream is a performance issue. Create a non-templated base class for AppEnum. Implement the QTextStream operator for this interface.

ApplicationLibCode/ProjectDataModel/Streamlines/RimStreamlineDataAccess.h

@@ -25,7 +25,7 @@
 #include <QString>
 
 #include <list>
-#include <set>
+#include <map>
 
 class RigCell;
 class RimStreamline;