Added ListGroup class for better management of a group of objects.

manim_ml/neural_network/layers/util.py

@@ -0,0 +1,20 @@
+from manim import *
+from ..layers import connective_layers_list
+
+def get_connective_layer(input_layer, output_layer):
+    """
+        Deduces the relevant connective layer
+    """
+    connective_layer = None
+    for connective_layer_class in connective_layers_list:
+        input_class = connective_layer_class.input_class
+        output_class = connective_layer_class.output_class
+        if isinstance(input_layer, input_class) \
+            and isinstance(output_layer, output_class):
+            connective_layer = connective_layer_class(input_layer, output_layer)
+
+    if connective_layer is None:
+        raise Exception(f"Unrecognized class pair {input_layer.__class__.__name__}" + \
+                        " and {output_layer.__class__.__name__}")
+                        
+    return connective_layer