#2365 Replace PdmField<QString> with PdmField<caf::FilePath> for file path fields

Convert 11 file/directory path fields from QString to caf::FilePath across
ProjectDataModel classes for type safety and consistent path handling.

Fields converted: RimCalcScript::absoluteFileName,
RimScriptCollection::directory, RimBinaryExportSettings::fileName,
RimExportInputSettings::fileName, RimFractureExportSettings::fileName,
RimReservoirCellResultsStorage::m_resultCacheFileName,
RimProcess::m_workDir, RimWellIASettings::m_baseDir,
RimPlotTemplateFileItem::m_absoluteFileName,
RimWellMeasurement::m_filePath, RimFileWellPath::m_filePath.

ApplicationLibCode/ProjectDataModel/RimCalcScript.h

@@ -18,6 +18,7 @@
 
 #pragma once
 
+#include "cafFilePath.h"
 #include "cafPdmField.h"
 #include "cafPdmObject.h"
 
@@ -45,7 +46,7 @@ public:
 
     static QStringList createCommandLineArguments( const QString& absoluteFileNameScript );
 
-    caf::PdmField<QString> absoluteFileName;
+    caf::PdmField<caf::FilePath> absoluteFileName;
 
 protected:
     void defineUiTreeOrdering( caf::PdmUiTreeOrdering& uiTreeOrdering, QString uiConfigName = "" ) override;