Add stack monitor that fails fast if transformer does not yield a sufficient stack number size.

[raphw]

To simplify debugging, each transformer's result should be validated to check if the created stack is equivalent with the requested result which should be an empty stack or a stack with size one. If the validation fails, one knows exactly which transformer did not create the expected result what should simplify locating the error.

[github-actions]

Test Results

 2 576 files  ±0   2 576 suites  ±0   13m 14s ⏱️ +46s
 6 305 tests ±0   6 220 ✅ ±0   85 💤 ±0  0 ❌ ±0 
25 392 runs  ±0  25 024 ✅ ±0  368 💤 ±0  0 ❌ ±0 

Results for commit 384e10c. ± Comparison against base commit 8416180.

♻️ This comment has been updated with latest results.

[bdw429s]

@jbeers Does this need merged?

[raphw]

Just fixed the formatting, but I would recommend to add this to allow for debugging on a more local level.

[lmajano]

Are we still going to add this, seems it has conflicts now?

[raphw]

I think this could be valuable to have available if you suddenly encountered illegal byte code. It does not come with overhead, if deactivated, so I'd merge it in.