new(tests): EOF - EIP-4750: unreachable code sections

[chfast]

🗒️ Description

This migrates tests for unreachable code sections from
EOFTests/efValidation/unreachable_code_sections_.json
but also complements test cases with focus on containers where
each section is referenced by some section but some are not reachable
from section 0.

✅ 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: All converted JSON/YML tests from ethereum/tests have been added to converted-ethereum-tests.txt.
• Tests: A PR with removal of converted JSON/YML tests from ethereum/tests have been opened: remove EEST covered tests: unreachable EOF code sections tests#1404
• 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.

[pdobacz]

minor comments, lgtm!

[marioevz]

Looks really good, it's also fine by me if it stays in this single file, thanks!