Fix numpy -> tensor with latest tensorImpl changes (copyFromHost instead of setRawPtr) + Use of std::int32_t instead of in and std::int64_t instead of long to fit Data.hpp convention.

Add Convert operator (a.k.a. Transmitter)

See merge request !57

Update fuseBatchNorm to include ConvDepthWise and MetaOperator containing Conv or ConvDepthWise as an output

Improvements and fixes

See merge request !59

Vit operators

See merge request !47

Change 'int32_t' for 'size_t' as this type is widly used in the whole framework and is made to repesent dimensions

# Conflicts:
#   include/aidge/operator/Slice.hpp
#   src/operator/Slice.cpp