tests(eip7742): initial tests for eip7742

[spencer-tb]

🗒️ Description

Adds some basic tests for EIP-7742:

• Test duplicates for the invalid Cancun blob tests that are now valid for Prague.
• Test for zero blobs in a type 3 txs.
• Tests for some arbitrary values above the Cancun MAX_BLOBS_PER_BLOCK.
• Tests with multiple blocks using varied blobs per tx.
• Tests with multiple blocks ascending from 0 to N.
• Tests with multiple blocks descending from N to 0.
• Tests with multiple blocks ascending from 0 to N then descending from N to 0.

We should still add fork transition tests in the future, where we test invalid blob counts before the fork (i.e 256/0 at Cancun). And consider adding some more tests ported from Cancun.

Fills with the following EELS resolution change for Prague:

    "Prague": {
        "git_url": "https://github.com/spencer-tb/execution-specs.git",
        "branch": "forks/prague",
        "commit": "857c3fa4d733535f32e9f17250d5790dd7ab5a76"
    }

🔗 Related Issues

Requires #931.

✅ 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.