Source code for resilient SDC paper

Code release for the article "Resilience Against Soft Faults through Adaptivity in Spectral Deferred Correction" (arXiv:2412.00529).
Scripts are located under pySDC/projects/Resilience, see README.rst for further instructions.

Contains also:

• FieldsIO: Interface for (parallel) writing of data in useful formats such as vtk by @tlunet (#512)
• Added compatibility between pySDC and the finite element library Firedrake by @jshipton and @brownbaerchen (#513)
• Added coupling between pySDC and geophysical fluid dynamics library Gusto by @jshipton and @brownbaerchen (#516)
• Loads of maintenance by @pancetta, @jakob-fritz, @tlunet, and @brownbaerchen