added non regression tests (short and long)

non-regression-tests/NA_cohesive-sequence.fasta

non-regression-tests/check_HK97_20.sh

non-regression-tests/check_HK97_class.py

non-regression-tests/check_HK97_res.py

non-regression-tests/check_Lamda_class.py

non-regression-tests/check_N1_res.py

non-regression-tests/check_P1_class.py

non-regression-tests/check_P1_res.py

non-regression-tests/check_Staph1N_class.py

non-regression-tests/check_T4_class.py

non-regression-tests/check_T4_res.py

non-regression-tests/check_T7_class.py

non-regression-tests/check_T7_res.py

non-regression-tests/check_lamda_res.py

non-regression-tests/common.py

non-regression-tests/common_nrt.sh

non-regression-tests/data/HK97_assembly.fasta

non-regression-tests/data/Lambda_assembly.fasta

non-regression-tests/data/P1_assembly.fasta

non-regression-tests/data/R1_1M_READS_EACH_PHAGE(1).fastq.4