Fix layout from [H,W,C] to [C,H,W]

Fix Aidge::tensorOpencv function to create a tensor from a cv::MAT with a layout of [Channel ,Height, Width]. Fix Tests accordingly.

changed milestone to %aidge_backend_opencv - v0.0.2

added LanguageC++ label

requested review from @pineapple

assigned to @thibaultallenet

added 10 commits

• d0b35714...516846ea - 9 commits from branch dev
• 60b8533d - Merge branch 'dev' into layout

Compare with previous version

mentioned in commit bfd9e900

merged

changed milestone to %aidge_backend_opencv - v0.1.0