Create opcode test cases generator

For a future PR:

I think we can generalize these into a test generator:

Given (1) an Opcode, (2) a list of verification stack inputs/ouputs combinations, test the opcode in many different contexts and verify it works correctly, including Call-contexts, contract creation contexts, 7702 delegation context, etc.

Something like:
```python
def generate_context_tests_for_opcode(
opcode: Op,
inputs_outputs: List[Tuple[List[int], int]],
):
```
And then on a test file you can do:
```python
@generate_context_tests_for_opcode(
opcode=Op.CLZ,
inputs_outputs=[ ( [0x01], 0x01 ), ( [0xff], 256 - 8 ), ...
)
def test_clz_in_all_contexts(
...
```

_Originally posted by @marioevz in https://github.com/ethereum/execution-spec-tests/pull/1829#discussion_r2231560633_