Merge branch 'amanzano/7-execute-rpcs-tests-in-ci' into 'main'

Resolve "Execute RPCs tests in CI"

This MR improves the test subsystem by doing the following:

- [x] Register missing C++ tests in CTest
- [x] Add missing C tests for `libadm_iosched.so` interfaces
- [x] Register C tests in CTest
- [x] Update `.gitlab-ci.yml` to automatically execute tests

Closes #6 #7 #11

See merge request !12