Future Proofing and Numerical Stability for Testing RAYX

[Atraxus]

@ichinii, @fannyzotter, @treegardel, @JonasTrenkler, @valentinstoecker

The goal of this issue is to start a discussion on how to handle testing in the future. We mentioned different challenges that might appear later down the development road map. Especially since we are diverging from RAY-UI on some features and even are developing new features, where RAYX won't be comparable to RAY-UI anymore.

Further, there is the issue of knowing where numerical stability might be compromised in our calculations and whether deviations from previously defined targets represent degradation or improvement of the results.