Resolve "Arithmetic Operator optimization"

Closes #5

• Add
• And
• BitShift
• Div
• Equal
• Mul
• Pow
• Sub

Here is the comparison of performances for Add operator in percents (%). It is representative of perfomance gains for other elementwise operators.

Default size of both inputs was [64,64,64,64]

I also changed Catch2 version from 3.0.1 to 3.7.1

include/aidge/backend/cpu/operator/AddImpl.hpp

@@ -25,7 +25,7 @@
 namespace Aidge {
 // Operator implementation entry point for the backend
 using AddImpl_cpu = OperatorImpl_cpu<Add_Op,
-    void(const std::vector<const void*>, const std::vector<std::vector<std::size_t>>&, const std::size_t, const std::vector<std::size_t>&, void*)>;
+    void(std::vector<std::size_t>, std::vector<std::size_t>, const std::vector<std::size_t>&, const void*, const void*, void*)>;
 
 // Implementation entry point registration to Operator
 REGISTRAR(Add_Op, "cpu", Aidge::AddImpl_cpu::create);