Test PUSH0

Documentation for tests/shanghai/eip3855_push0/test_push0.py@02aafd78.

Generate fixtures for these test cases for Bogota with:

fill -v tests/shanghai/eip3855_push0/test_push0.py --fork Bogota

Tests EIP-3855: PUSH0 Instruction.

Tests ported from: ethereum/tests/pull/1033.

Test Functions Overview

Name	Type	Cases (Bogota)	Description
test_push0_contract_during_call_contexts	state_test	4	Test PUSH0 during various call contexts.
test_push0_contracts	state_test	4	Tests PUSH0 within various deployed contracts.