feature: Implement StateTest fixture types

[marioevz]

🗒️ Description

Implements STATE_TEST fixture format generation from StateTest type tests.

Limits the StateTest class to have a single transaction.

Modifies all tests to limit StateTest calls to have only a single transaction.

🔗 Related Issues

None

✅ Checklist

• All: Set appropriate labels for the changes.
• All: Considered squashing commits to improve commit history.
• All: Added an entry to CHANGELOG.md.
• All: Considered updating the online docs in the ./docs/ directory.
• Tests: Included the type and version of evm t8n tool used to locally execute test cases: e.g., ref with commit hash or geth 1.13.1-stable-3f40e65.
• Tests: Ran mkdocs serve locally and verified the auto-generated docs for new tests in the Test Case Reference are correctly formatted.

[danceratopz]

It's wonderful. Enjoying this so much!

Minor bug fix that crept in in #354 here: marioevz#14

Otherwise, LFG.