Add automated SLR SINEX testing, following the DORIS template. Change in [run_test_suite.py](https://github.com/DSOlab/libsinex/blob/main/run_test_suite.py) and [test/reference_results.py](https://github.com/DSOlab/libsinex/blob/main/test/reference_results.py).
Add automated SLR SINEX testing, following the DORIS template.
Change in run_test_suite.py
and test/reference_results.py.