[WIP] Add CELVQ

TODO Ensure that the distances/probs corresponding to the plabels are sorted
like the target labels.

prototorch/models/__init__.py

@@ -2,7 +2,7 @@ from importlib.metadata import PackageNotFoundError, version
 
 from . import probabilistic
 from .cbc import CBC, ImageCBC
-from .glvq import (GLVQ, GLVQ1, GLVQ21, GMLVQ, GRLVQ, LVQMLN, ImageGLVQ,
+from .glvq import (CELVQ, GLVQ, GLVQ1, GLVQ21, GMLVQ, GRLVQ, LVQMLN, ImageGLVQ,
                    ImageGMLVQ, SiameseGLVQ)
 from .lvq import LVQ1, LVQ21, MedianLVQ
 from .unsupervised import KNN, NeuralGas