Add a separate executable for system tests

[mx990]

The system tests are currently limited to the FB and data types present in the regular forte executable¹.

I would propose to add a separate executable for system tests. This allows to include additional FB and data types to facilitate testing, without polluting the forte executable.

Footnotes

1. unless it is polluted with additional test-specific sources, see systemtests/src/modules/opc_ua/namespace/CMakeLists.txt ↩

[cochicde]

do you mean having a system_test_forte which wraps forte and adds some test FBs?

[mx990]

do you mean having a system_test_forte which wraps forte and adds some test FBs?

Yes, exactly.