feat: add activatios to each layer

Author: Keshav-writes-code

try1 (OOP Approach)/cpp/include/NeuralNet/classes.h

@@ -19,6 +19,7 @@ class Layer {
 
 public:
   Neuron **neurons;
+  float *activations;
   Layer(int size, int prevLayerSize);
   ~Layer();
   void forward_pass(float *inputs, int input_size);

try1 (OOP Approach)/cpp/src/classes.cpp

@@ -48,6 +48,7 @@ Neuron::~Neuron() {
 Layer::Layer(int size, int prevLayerSize) {
   this->size = size;
   this->neurons = new Neuron *[size];
+  this->activations = new float[size]();
 
   for (int i = 0; i < size; i++) {
     this->neurons[i] = new Neuron(prevLayerSize);