Fix no bias

FC kernel does not handle properly the absence of bias!

This closes the outdated !20 (closed).

changed milestone to %aidge v0.6.0

added Fix 🔥🔥 label

assigned to @olivierbichler

enabled an automatic merge when all merge checks for aeb881c9 pass

mentioned in merge request !20 (closed)

mentioned in commit 6a5441df

merged