fix: adding permission to linter

Author: lachlangrose

.github/workflows/linter.yml

@@ -16,6 +16,8 @@ on:
 env:
   PROJECT_FOLDER: "loopstructural"
   PYTHON_VERSION: 3.9
+permissions:
+  contents: write
 
 
 jobs:

loopstructural/gui/visualisation/feature_list_widget.py

@@ -57,6 +57,11 @@ def _get_vector_scale(self, scale: Optional[Union[float, int]] = None) -> float:
         return scale
 
     def add_feature(self, feature):
+        """Add a feature to the feature list.
+
+        :param feature: The feature to add.
+        :type feature: Feature
+        """
         featureItem = QTreeWidgetItem(self.treeWidget)
         featureItem.setText(0, feature.name)