feat(t8n): Support evmone's --opcode.count option

[marioevz]

🗒️ Description

Adds support for the --opcode.count parameter added in ipsilon/evmone#1274.

This is still in draft but already helped on #1935 to get the diffs in opcode counts from before and after the PR.

🔗 Related Issues or PRs

Closes #1852

• chore(fill): decide on an "opcode count" t8n interface #1852

✅ Checklist

• All: Ran fast tox checks to avoid unnecessary CI fails, see also Code Standards and Enabling Pre-commit Checks:

  uvx --with=tox-uv tox -e lint,typecheck,spellcheck,markdownlint

• All: PR title adheres to the repo standard - it will be used as the squash commit message and should start type(scope):.
• All: Considered adding an entry to CHANGELOG.md.
• All: Considered updating the online docs in the ./docs/ directory.
• All: Set appropriate labels for the changes (only maintainers can apply labels).
• Tests: Ran mkdocs serve locally and verified the auto-generated docs for new tests in the Test Case Reference are correctly formatted.
• Tests: For PRs implementing a missed test case, update the post-mortem document to add an entry the list.
• Ported Tests: All converted JSON/YML tests from ethereum/tests or tests/static have been assigned @ported_from marker.