Create at least one test for ant modules without any tests

[ursjoss]

Some modules don't have any test. While compiling the project, there are warnings about this, e.g.

No such dir /home/urs/work/git/forked/tr-pc/modules/au.com.trgtd.tr.imports/test/unit/src; should not define test deps

The missing tests can easily be observed in Netbeans, as there is no node Unit Test Packages in the Project tree:

Also (at least some) of those modules are not included in the just recipe verify-tr (which is run by the CI via Github Actions). They should be listed further down commented out as of line #97:

We should ensure that evrey module has at least one unit test, even if it is just a dummy test that let's us avoid the warning and most of all include the module in the ci test run. Otherwise we may add real tests later and forget to activate the module in the justfile.