ci: Introduce anti-regression-shield

[artemyarulin]

Rework on previous python upstream tests.

• First of all it's now called Anti-Regression Shield (patent pending) or shield in short 🛡️
• It now includes tests:
  • Python: 37,966 🐍
  • Node: 4,906 🌐
  • PHP: 19,915 💩
  • Rust: 22,120 💠
• It now detects crashes - panics, RuntimeError, stack overflow and others
• Reports are now state of the art better looking, actionable, human and LLM friendly. So you can copy paste report to the agent and it will have everything in the context for debugging
• This PR makes those tests to run automatically to run as part of CI. On average it takes an hour to build. It should be possible to reduce it to 30-40 minutes I'm sure
• For outside contributors with PR from forks it's still possible to run a test via requesting build manually. Review the PR manually first, then go to https://github.com/wasmerio/anti-regression-shield/actions/workflows/pr.yml, press Run workflow, fill the form and build with normal reporting will happen. All PR jobs runs totally isolated with no tokens available, so it is safe. Having that feature would allows us to accept outside contribution with much easier flow, especially WASIX fixes that we got now and then

More info on Anti-Regression Shield (c) you can find in https://github.com/wasmerio/anti-regression-shield