added shape "infinity". fixes stefmolin#179

src/data_morph/data/loader.py

@@ -51,6 +51,7 @@ class DataLoader:
         'Python': 'python.csv',
         'SDS': 'superdatascience.csv',
         'sheep': 'sheep.csv',
+        'infinity': 'infinity.csv',
     }
     AVAILABLE_DATASETS = sorted(_DATASETS.keys(), key=str.lower)
     """list[str]: List of available built-in starter datasets,

src/data_morph/data/starter_shapes/infinity.csv

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