- worked on the NCC Tool; added a new clear method named 'Combo' which will go through all methods until the clear is done

- added a Preferences parameter for font size used in HUD

flatcamGUI/preferences/tools/ToolsNCCPrefGroupUI.py

@@ -227,7 +227,7 @@ class ToolsNCCPrefGroupUI(OptionsGroupUI):
         # ], orientation='vertical', stretch=False)
         self.ncc_method_combo = FCComboBox()
         self.ncc_method_combo.addItems(
-            [_("Standard"), _("Seed"), _("Lines")]
+            [_("Standard"), _("Seed"), _("Lines"), _("Combo")]
         )
 
         grid0.addWidget(methodlabel, 12, 0)