Issue #241 - Add tox config and update gitignore

Add stripped down version of tox config from Core. This has
python-version specific testing removed since we don't have a test suite
(in python) to exercise stuff.

Note, the tox runs won't work currently due to required changes that are
pending in other PRs.

.gitignore

@@ -1,5 +1,6 @@
 build/
 dist/
+.tox/
 
 *.pyc
 

tox.ini

@@ -0,0 +1,32 @@
+[tox]
+envlist =
+    docs
+    lint
+
+isolated_build = True
+
+[testenv:docs]
+setenv = AIT_CONFIG = {toxinidir}/config/config.yaml
+whitelist_externals = poetry
+commands_pre =
+    poetry install
+commands =
+    poetry run sphinx-build doc/source doc/build
+basepython = python3.10
+
+[testenv:lint]
+setenv = AIT_CONFIG = {toxinidir}/config/config.yaml
+commands_pre =
+    poetry install
+commands=
+    python -m pre_commit run --color=always {posargs:--all}
+basepython = python3.10
+
+[testenv:distcheck]
+skip_install = true
+deps =
+    twine
+    poetry
+commands =
+    poetry build
+    poetry run twine check dist/*