Utility functions for initializing coils for stage 2 optimization

CHANGELOG.md

@@ -35,6 +35,7 @@ New Features
 - Allows ``ToroidalFlux`` objective to accept ``FourierRZToroidalSurface`` so it can be used to specify the toroidal flux through a QFM surface.
 - Adds ``eq_fixed`` flag to ``ToroidalFlux`` to allow for the equilibrium/QFM surface to vary during optimization, useful for single-stage optimizations.
 - Adds tutorial notebook showcasing QFM surface capability.
+- Add ``desc.coils.initialize_modular_coils`` and ``desc.coils.initialize_saddle_coils`` for creating an initial guess for stage 2 optimization.
 - Adds ``rotate_zeta`` function to ``desc.compat`` to rotate an ``Equilibrium`` around Z axis.