refactor(fw,tests): fix address and hash types

[marioevz]

🗒️ Description

• Creates the common/base_types.py file, which includes basic types other complex types use, such as Address, Hash, and other types that do not have any other dependency.
• Completely removes to_address, to_hash and to_hash_bytes in favor of using the Address and Hash classes directly.
• Adds Address to the list of types an Op callable can receive, and, instead of treating the Address as bytecode, it automatically detects the type and adds the appropriate Op.PUSH20.
• FixedSizeBytes types can now be compared to strings and integers
• Removes Op.PUSH20 across all tests when an Address type is used as a parameter of an Op.

Nice thing about this change is that it produces zero fixture changes, and slightly reduces lines of code.

TODO: Update docs.

🔗 Related Issues

Fixes #387

✅ 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.

[spencer-tb]

LGTM! Had another look locally to see if I could find anything else, got matching fixtures too :D

[spencer-tb]

Not sure what docs should be added, the only thing I can think of adding the usage of the Address type when initializing accounts, within pre & post states etc here:
https://github.com/ethereum/execution-spec-tests/blob/main/docs/writing_tests/writing_a_new_test.md?plain=1#L103-L206

This PR got me thinking: I wonder if we should force all addresses to be of the Address type, pre and post to be Alloc types, and storage to be Storage. If we check for this when filling, it might catch some an unintentional additions.

[danceratopz]

Really welcome tidy-up to our types, makes much more sense. And also nice to move these to base_types.py.

Agree with Spencer, not sure what we could add to the docs here.

[marioevz]

Really welcome tidy-up to our types, makes much more sense. And also nice to move these to base_types.py.

Agree with Spencer, not sure what we could add to the docs here.

I think we could search for to_address usages and remove them.

Just verified and there aren't any.