feat(fw): run evm blocktest on generated fixtures

[danceratopz]

🗒️ Description

This PR optionally enables the execution of evm blocktest on each generated JSON fixture file. The check is ran as a function in the FixtureCollector in a module-scope pytest fixture (so is not executed per test function or per test-case).

If --t8n-dump-dir is additionally specified, the output of the evm blocktest command is also written there along with a verify_fixtures.sh script to re-run the command.

There's a couple of other changes to the t8n-dump directories:

• The JSON fixtures always get copied to the corresponding t8n-dump directory.
• The t8n-dump directory structure:
  • Adds an additional directory level for the output of the evm test command and a copy of the json fixtures.
  • Stays as flat as possible, but the base directory is now named to match the location of the test case within ./tests.

      /tmp/evmone/berlin__eip2930_access_list__test_acl__test_access_list/
      ├── fork_Berlin
      │   ├── 0
      │   │   ├── args.py
      │   │   ├── input
      │   │   │   ├── alloc.json
      │    ....
      │   ├── test_access_list.json
      │   ├── verify_fixtures_args.py
      │   ├── verify_fixtures_returncode.txt
      │   ├── verify_fixtures.sh
      │   ├── verify_fixtures_stderr.txt
      │   └── verify_fixtures_stdout.txt
       ...
      ```
  

Examples:

1. No fixture checking performed

   fill
   

2. Use first "evm" binary in path as a t8n tool and as an evm *test tool (same binary used)

   fill --verify-fixtures
   

3. Use a different evm binary as an evm test tool (first evm binary in path used as t8n tool; --verify-fixtures not necessary)

   fill --verify-fixtures-bin=~/code/github/marioevz/go-ethereum/build/bin/evm
   

4. Explicitly set both t8n and test tools; dump debug data

   fill --evm-bin=~/code/github/ethereum/evmone/build/bin/evmone-t8n --verify-fixtures-bin=~/code/github/marioevz/go-ethereum/build/bin/evm  --evm-dump-dir=/tmp/evmone
   

🔗 Related Issues

• Partially implements 🧱 Feature: Add the go-ethereum evm blocktest within tox #237 (just need to add the calls with relevant command-line arguments in tox or ci/cd).
• Makes feature: Fill using multiple evm binaries and compare results #185 partially redundant.

✅ 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.

[marioevz]

Looks very good! Just a few comments to keep in mind.

[danceratopz]

Changes after discussing with Mario.

[marioevz]

LGTM :)