restructure as domain-driven design architecture

tests/static_analysis/requirements.txt

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+bandit
+mccabe
+mypy

tests/static_analysis/run_static_analysis.sh

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+# get dependencies
+pip install -r ./requirements.txt
+
+# check cyclomatic complexity
+python -m mccabe --min 3 ./../src/**/*.py
+
+# SAST (static application security testing)
+bandit -r ./../src
+
+mypy