Add a calculator to integrate range from energy loss

[amandalund]

As we refactor the physics table construction we'll probably move toward replacing the Process::step_limits with macro_xs and energy_loss (initially the process-integrated energy loss, but eventually letting each process provide its own and summing them) and then integrating the range from the energy loss ourselves. This adds a calculator for integrating the range from a dedx grid and uses it in the physics grid construction.

I'm leaving this as a draft for now because it changes a lot of test results. I think this could be because of differences in the spline interpolation, but it would be good to understand and discuss what we want to do before I go too far with it. I added a failing test comparing range values calculated from the imported dedx to the imported range to get a rough idea of the magnitude of the differences.

[github-actions]

Test summary

  424 files    665 suites   26s ⏱️
1 332 tests 1 278 ✅ 39 💤 15 ❌
2 428 runs  2 394 ✅  8 💤 26 ❌

For more details on these failures, see this check.

Results for commit 9d389b1.