Create an error nul module

[arthur91f]

During infra.EnrichBricks() when brick.Enrich() return the error "No matching module name", we should create a default module that will do nothing and return an error each time it is called if not, when calling loadAvailable action we encounter a
panic: runtime error: invalid memory address or nil pointer dereference

And we need to display a warning.

The module should return an error and a 5 status code each time it is called.

[half-shell]

The issue can be triggered by setting a module's name that does not exist.