feat(SpectralSolver): Spectral Solver now works in a limited fashion

Major work on spectral solver, can now evolve up to about a year. At
that point we likely need to impliment repartitioning logic to stabalize
the network or some other scheme based on the jacobian structure

build-check/CPPC/meson.build

@@ -33,5 +33,5 @@ else
 endif
 
 if get_option('openmp_support')
-    add_project_arguments('-DGRIDFIRE_USE_OPENMP', language: 'cpp')
+    add_project_arguments('-DGF_USE_OPENMP', language: 'cpp')
 endif