added the option to write the content of the MINUIT2.OUTPUT ascii file as yaml. This extends the previous commit from Ryan M.L. McFadden.

src/musredit_qt6/musredit/PPrefsDialog.h

@@ -54,6 +54,7 @@ class PPrefsDialog : public QDialog, private Ui::PPrefsDialog
     bool getEnableMusrT0Flag()      { return fEnableMusrT0_checkBox->isChecked(); }
     bool getKeepRunPerBlockChisqFlag() { return fPerRunBlockChisq_checkBox->isChecked(); }
     bool getEstimateN0Flag()        { return fEstimateN0_checkBox->isChecked(); }
+    bool getYamlOutFlag()           { return fYamlOut_checkBox->isChecked(); }
     bool getDarkThemeIconsMenuFlag()    { return fDarkThemeIconsMenu_checkBox->isChecked(); }
     bool getDarkThemeIconsToolbarFlag()    { return fDarkThemeIconsToolbar_checkBox->isChecked(); }
     bool getOneToOneFlag() { return fOneToOne_checkBox->isChecked(); }