(build): forbid module linking, even for tests

Description

Add a specila verification step to forbid linking with a module.

I also renamed fw_cppunit_test to fw_test. This is not directly related to this MR, just cosmetics, I could of course remove it.

Closes #843 (closed)

How to test it?

Replace:

target_link_libraries(module_dataTest PUBLIC core service utest)

by :

target_link_libraries(module_dataTest PUBLIC core service module_data utest)

And try to build. It should NOT configure.