Python 3.11 support added

[devin-roffman-emerson]

• This contribution adheres to CONTRIBUTING.md.

What does this Pull Request accomplish?

• Adds Python 3.11 to the tox test matrix (both unit tests and system tests)
• Switches tox to python -m tox in azure-pipelines.yml since the CI machine uses pyenv-win which doesn't have tox on PATH directly
• Applies black formatting fixes to 3 files

Why should this Pull Request be merged?

The CI pipeline fails because tox isn't recognized as a command on the build agent (pyenv-win doesn't add scripts to PATH). Using python -m tox resolves this. Additionally, Python 3.11 is installed on the build agent and should be included in the test matrix to ensure compatibility.

What testing has been done?

• I have run the automated tests (required if there are code changes)
• Verified Python 3.11.9 is installed on the CI agent via pyenv versions
• Ran python -m black --check . locally to confirm formatting is clean
• Pipeline run on this branch to validate the tox and python version changes