Bug fixes and linting for the activation functions addition.

examples/basic_neural_network/basic_neural_network.py

@@ -0,0 +1,26 @@
+from manim import *
+from manim_ml.neural_network.layers import FeedForwardLayer
+from manim_ml.neural_network.neural_network import NeuralNetwork
+
+
+class NeuralNetworkScene(Scene):
+    """Test Scene for the Neural Network"""
+
+    def construct(self):
+        # Make the Layer object
+        layers = [
+            FeedForwardLayer(3), 
+            FeedForwardLayer(5), 
+            FeedForwardLayer(3)
+        ]
+        nn = NeuralNetwork(layers)
+        nn.scale(2)
+        nn.move_to(ORIGIN)
+        # Make Animation
+        self.add(nn)
+        # self.play(Create(nn))
+        forward_propagation_animation = nn.make_forward_pass_animation(
+            run_time=5, passing_flash=True
+        )
+
+        self.play(forward_propagation_animation)