add get_features_list

Author: yeoldegrove

src/python_gardenlinux_lib/features/parse_features.py

@@ -138,7 +138,20 @@ def get_features_dict(cname: str, gardenlinux_root: str) -> dict:
             if __get_node_type(graph.nodes[feature]) == type
         ]
     return features_by_type
+    
+def get_features_list(cname: str, gardenlinux_root: str) -> list:
+    """
+    :param str cname: the target cname to get the feature dict for
+    :param str gardenlinux_root: path of garden linux src root
+    :return: list of features for a given cname
 
+    """
+    feature_base_dir = f"{gardenlinux_root}/features"
+    input_features = __reverse_cname_base(cname)
+    feature_graph = read_feature_files(feature_base_dir)
+    graph = filter_graph(feature_graph, input_features)
+    features = __reverse_sort_nodes(graph)
+    return features
 
 def get_features(cname: str, gardenlinux_root: str) -> str:
     """