[UPD] add some logging informations

Context

Add some informations using the Log system

Major modifications

• Enhance GraphView::forwardDims() CPP and Python description
• Log:
  • Add width system to Log::log
  • fix NDEBUG pre-compilation condition
• remove some unused variables / includes / function calls in 'GraphView.cpp', 'Leaky.cpp', 'Test_Squeeze_Op', 'ErrorHandling.hpp'
• write back minimal version for fmt library (10.2.1)
• Change 'approxEq' assertions for 'Log::error' since issues are not fatal