LNX-26 Add github action for tests

[alpinus4]

Also fix missing argument in tests when calling runtime.

The problem is some errors aren't raised as expected in tests.
To be discussed.

FAILED tests/builtins_test.py::test_import_failure - Failed: DID NOT RAISE <class 'ImportError'>
FAILED tests/builtins_test.py::test_open_failure - Failed: DID NOT RAISE <class 'NameError'>
FAILED tests/builtins_test.py::test_print_failure - Failed: DID NOT RAISE <class 'NameError'>
========================================= 3 failed, 4 passed in 0.08s =========================================

[filip-szweda]

Looks good to me, let's wait for addition of actual error handling before we merge these changes.