Task LSMR-8: Added simple functional test case and unit test stub

.gitattributes

CMake/LofarPackageList.cmake

SAS/LSMR/bin/lsmr

SAS/LSMR/requirements.txt

SAS/LSMR/src/CMakeLists.txt

SAS/LSMR/src/lsmr/lsmrapp/migrations/0001_initial.py

SAS/LSMR/test/CMakeLists.txt

SAS/LSMR/test/t_functional.py

SAS/LSMR/test/t_functional.run

SAS/LSMR/test/t_functional.sh

SAS/LSMR/test/t_lsmrapp_models.py

SAS/LSMR/test/t_lsmrapp_models.run

SAS/LSMR/test/t_lsmrapp_models.sh