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

src/include/gridfire/utils/gf_omp.h

@@ -0,0 +1,50 @@
+#pragma once
+#include "fourdst/logging/logging.h"
+#include "quill/LogMacros.h"
+
+#if defined(GF_USE_OPENMP)
+
+#include <omp.h>
+
+namespace gridfire::omp {
+    static bool s_par_mode_initialized = false;
+
+    inline unsigned long get_thread_id() {
+        return static_cast<unsigned long>(omp_get_thread_num());
+    }
+
+    inline bool in_parallel() {
+        return omp_in_parallel() != 0;
+    }
+
+    inline void init_parallel_mode() {
+        if (s_par_mode_initialized) {
+            return; // Only initialize once
+        }
+        quill::Logger* logger = fourdst::logging::LogManager::getInstance().getLogger("log");
+        LOG_INFO(logger, "Initializing OpenMP parallel mode with {} threads", static_cast<unsigned long>(omp_get_max_threads()));
+        CppAD::thread_alloc::parallel_setup(
+            static_cast<size_t>(omp_get_max_threads()), // Max threads
+            []() -> bool { return in_parallel(); },                              // Function to get thread ID
+            []() -> size_t { return get_thread_id(); }                                 // Function to check parallel state
+        );
+
+        CppAD::thread_alloc::hold_memory(true);
+        s_par_mode_initialized = true;
+    }
+}
+
+#define GF_PAR_INIT() gridfire::omp::init_parallel_mode();
+
+#else
+
+namespace gridfire::omp {
+    inline void log_not_in_parallel_mode() {
+        quill::Logger* logger = fourdst::logging::LogManager::getInstance().getLogger("log");
+        LOG_INFO(logger, "This is not an error! Note: OpenMP parallel mode is not enabled. GF_USE_OPENMP is not defined. Pass -DGF_USE_OPENMP when compiling to enable OpenMP support. When using meson use the option -Dopenmp_support=true");
+    }
+}
+
+#define GF_PAR_INIT() gridfire::omp::log_not_in_parallel_mode();
+
+#endif