feat(test): init tox config

tox.ini

@@ -0,0 +1,44 @@
+[tox]
+requires = 
+    tox>=4.19
+env_list =
+    py3{8-12}-{unit}
+    lint
+    format
+
+[testenv]
+deps = 
+    .
+
+[testenv:lint]
+description = run type check on code base
+labels = static
+deps = 
+    mypy
+commands =
+    mypy src tests --junit-xml test-reports/{env_name}.xml
+
+[testenv:audit]
+description = run type check on code base
+labels = audit
+deps = 
+    pip-audit
+commands =
+    pip-audit .
+
+[testenv:format]
+description = run type check on code base
+labels = static
+deps = 
+    black
+commands =
+    black --check src tests
+
+[testenv:py3{9-13}-unit]
+description = run type check on code base
+labels = unit
+deps = 
+    {[testenv]deps}
+    pytest
+commands =
+    pytest tests/unit --junitxml=test-reports/{env_name}.xml