Restructured and modified test cases

source/KKRhost/.gitignore

source/KKRhost/.gitlab-ci.yml

source/KKRhost/ALL_SOURCE_FILES/last_version_number

source/KKRhost/collect_coverage_results.sh

source/KKRhost/makefile

source/KKRhost/tests/inc.p

source/KKRhost/tests/potential

source/KKRhost/tests/run_all.sh

...st_inputs/test_1_fcc_Au_4_atom_bulk_lmax2_noSOC/inputcard

...st_inputs/test_1_fcc_Au_4_atom_bulk_lmax2_noSOC/potential

...est_inputs/test_1_fcc_Au_4_atom_bulk_lmax2_noSOC/shapefun

...s/test_2_bcc_Fe_1_2_1_atom_slab_lmax2_noSOC_mag/inputcard

...s/test_2_bcc_Fe_1_2_1_atom_slab_lmax2_noSOC_mag/potential

...ts/test_2_bcc_Fe_1_2_1_atom_slab_lmax2_noSOC_mag/shapefun

...ts/test_inputs/test_3_Silicon_lloyd_lmax2_noSOC/inputcard

...ts/test_inputs/test_3_Silicon_lloyd_lmax2_noSOC/potential

...sts/test_inputs/test_3_Silicon_lloyd_lmax2_noSOC/shapefun

source/KKRhost/tests/tools/kkrparser_functions.py

source/KKRhost/tests/tools/test_verify_results.py