Add Local-Matrix LVQ

Also remove the use of `self.distance_fn` in favor of `self.distance_layer`.

prototorch/models/__init__.py

@@ -1,10 +1,23 @@
+"""`models` plugin for the `prototorch` package."""
+
 from importlib.metadata import PackageNotFoundError, version
 
-from .probabilistic import LikelihoodRatioLVQ, RSLVQ
 from .cbc import CBC, ImageCBC
-from .glvq import (CELVQ, GLVQ, GLVQ1, GLVQ21, GMLVQ, GRLVQ, LVQMLN, ImageGLVQ,
-                   ImageGMLVQ, SiameseGLVQ)
+from .glvq import (
+    GLVQ,
+    GLVQ1,
+    GLVQ21,
+    GMLVQ,
+    GRLVQ,
+    LGMLVQ,
+    LVQMLN,
+    ImageGLVQ,
+    ImageGMLVQ,
+    SiameseGLVQ,
+    SiameseGMLVQ,
+)
 from .lvq import LVQ1, LVQ21, MedianLVQ
+from .probabilistic import CELVQ, RSLVQ, LikelihoodRatioLVQ
 from .unsupervised import KNN, NeuralGas
 from .vis import *