Added Bitshift Operator

Context

See : aidge_quantization#35 (closed)

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

@@ -25,10 +25,10 @@ namespace Aidge {
 
 // compute kernel registry for forward and backward
 class BitShiftImplForward_cpu
-    : public Registrable<BitShiftImplForward_cpu, std::tuple<DataType, DataType, DataType>, void(const Direction,const std::vector<std::size_t>&, const std::vector<std::size_t>&, const std::vector<std::size_t>&, const void*, const void*,void*)> {
+    : public Registrable<BitShiftImplForward_cpu, std::tuple<DataType, DataType, DataType>, void(const BitShiftDirection,const std::vector<std::size_t>&, const std::vector<std::size_t>&, const std::vector<std::size_t>&, const void*, const void*,void*)> {
 };
 class BitShiftImplBackward_cpu
-    : public Registrable<BitShiftImplBackward_cpu, std::tuple<DataType, DataType, DataType>, void(const Direction,const std::vector<std::size_t>&, const std::vector<std::size_t>&, const std::vector<std::size_t>&, const void*, const void*, void*)> {
+    : public Registrable<BitShiftImplBackward_cpu, std::tuple<DataType, DataType, DataType>, void(const BitShiftDirection,const std::vector<std::size_t>&, const std::vector<std::size_t>&, const std::vector<std::size_t>&, const void*, const void*, void*)> {
 };
 
 class BitShiftImpl_cpu : public OperatorImpl {