Check antenna violation metrics in the CI

[eder-matheus]

Description

Our current CI needs to check for antenna violations in its metric checks. We do not know how tool updates affect the number of antenna violations during GRT and DRT.

Suggested Solution

After having the new antenna checker structure (OR issue The-OpenROAD-Project/OpenROAD#3892), add antenna violations in the metrics checked in the CI. Post-DRT violations should be enough

Additional Context

No response