upd: remove many warnings at compile time in release mode

Context

Release compilation suffered from hundreds of warnings. This MR solves most of them.

Main changes

• move some inline functions from header to source
• include what is used in header and source files to avoid relying on recursive includes
• remove 'constexpr' from 'Tensor(Vector)' constructor that applied forced inlining
• use C++ types and not C type (std::size_t instead of size_t)
• move some default constructor/operators to src
• explicitly delete some default class constructors for 'SingleGraphMatching', 'StaticAnalysis', 'MetaOpStats' and 'OperatorStats'
• add default parameters to 'ArgMax' constructor
• make Node::mAttrs available to the associated Operator instead of accessing it each time getOperator() is called
• make some for loop access elements by reference in 'FuseBatchNorm'

changed milestone to %aidge v0.5.0

added Enhancement ⭐ label

assigned to @pineapple

changed the description

added 1 commit

• 0ab6f45d - add noexcept keyword to 'Context' destructor

Compare with previous version

added 7 commits

• 0ab6f45d...9dd41e85 - 4 commits from branch dev
• 2686e346 - upd: remove many warnings at compile time in release mode
• b7ea51c4 - add small changes
• 3357d08c - add noexcept keyword to 'Context' destructor

Compare with previous version

enabled an automatic merge when all merge checks for 3357d08c pass

mentioned in commit 434e21e3

merged