refactor(tools_qt): enhance QComboBox initialization by directly adding string items

Author: FerranMart

tools_qt.py

@@ -163,7 +163,10 @@ def __init__(
         elif widget_type == "QComboBox":
             self.widget = QComboBox(self)
             if options:
-                fill_combo_values(self.widget, options)
+                if isinstance(options[0], str):
+                    self.widget.addItems(options)
+                else:
+                    fill_combo_values(self.widget, options)
         elif widget_type == "QCheckBox":
             self.widget = QCheckBox(self)
         else: