[Fix] Producer clone and Tensor copy

Context

Closes #207 (closed)

Major modifications

• Tensor

  • add compound assignment operator (+=, -=, *=, /=) with Tensor and arithmetic values
  • add operator(+, -, *, /) with arithmetic values
  • add friend symetric operator (+, -, *) with arithmetic values
  • add fmt parsing function (now you can display a Tensor with fmt)
  • Add move assignment operator
  • Fix 'Tensor::clone()' if original Tensor has no implementation
  • Change Tensor::operator= behaviour to always perform a shallow copy in case of copy constructor/assignment operator calls

• Pop_Op: fix kernel that should not be inplace

• Data: add copy/move constructor/assignment operator

include/aidge/data/Data.hpp

@@ -20,6 +20,7 @@
 
 #include "aidge/data/half.hpp"
 #include "aidge/utils/Attributes.hpp"
+#include "aidge/utils/ErrorHandling.hpp"
 
 namespace Aidge {
 enum class DataType {
@@ -91,7 +92,19 @@ DataFormatTranspose getDataFormatTranspose(const DataFormat& src, const DataForm
 
 class Data {
 public:
+    Data() = delete;
+    Data(Data&& other) = default;
+    Data(const Data& other) = default;
     Data(const std::string& type): mType(type) {};
+
+    Data& operator=(const Data& other) {
+        AIDGE_ASSERT(other.mType == mType, "Cannot copy a different type fo Data object.");
+        return *this;
+    };
+    Data& operator=(Data&& other) {
+        AIDGE_ASSERT(other.mType == mType, "Cannot copy a different type fo Data object.");
+        return *this;
+    };
     constexpr const std::string& type() const {
         return mType;
     }