Mapinversion

[darioizzo]

Adding a notebook with the map inversion to compute sensitivities to events trigger times and manifolds

[darioizzo]

@bluescarni this is good to go now. Failiures in CI seem to be related to some pykep incompatibilities, anyway not related to this PR.

[bluescarni]

@darioizzo cheers, merging.

FYI, the pykep failure seems related to a function that has been removed in pykep:

raise NotImplementedError(err_mesg)\n\nNotImplementedError: `interp2d` has been removed in SciPy 1.14.0.

For legacy code, nearly bug-for-bug compatible replacements are\n`RectBivariateSpline` on regular grids, and `bisplrep`/`bisplev` for\nscattered 2D data.

In new code, for regular grids use `RegularGridInterpolator` instead.
For scattered data, prefer `LinearNDInterpolator` or`CloughTocher2DInterpolator`.

For more details see\nhttps://scipy.github.io/devdocs/tutorial/interpolate/interp_transition_guide.html"