refactor: Reformatting and Cleanup for #441

[jofaul]

Closes #441.

Summary of Changes

Refactoring of classes and tests in generate_annotations.

[github-actions]

MegaLinter status: ✅ SUCCESS

Descriptor	Linter	Files	Fixed	Errors	Elapsed time
✅ CREDENTIALS	secretlint	yes		no	4.15s
✅ GIT	git_diff	yes		no	0.01s
✅ JSON	eslint-plugin-jsonc	2	0	0	1.46s
✅ JSON	jsonlint	2		0	0.68s
✅ JSON	prettier	2	0	0	0.78s
✅ JSON	v8r	2		0	2.31s
✅ MARKDOWN	markdownlint	1	0	0	0.42s
✅ MARKDOWN	markdown-table-formatter	1	0	0	0.36s
✅ PYTHON	black	4	0	0	0.65s
✅ PYTHON	isort	4	0	0	0.21s
✅ PYTHON	mypy	4		0	31.05s

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