feat(fortran): Fortran interface can now use multi-zone

Fortran interface uses the new C api ability to call the naieve
multi-zone solver. This allows fortran calling code to make use of in
build parellaism for solving multiple zones

tools/gf_config/generate_config_files.cpp

@@ -0,0 +1,48 @@
+#include "fourdst/config/config.h"
+#include "gridfire/config/config.h"
+#include <source_location>
+#include <filesystem>
+
+#include  "CLI/CLI.hpp"
+
+consteval std::string_view strip_namespaces(const std::string_view fullName) {
+    const size_t pos = fullName.rfind("::");
+    if (pos == std::string_view::npos) {
+        return fullName;
+    }
+    return fullName.substr(pos + 2);
+}
+
+template <typename T>
+consteval std::string_view get_type_name() {
+    constexpr std::string_view name = std::source_location::current().function_name();
+    const auto pos = name.find("T = ");
+    if (pos == std::string_view::npos) return name;
+    const auto start = pos + 4;
+    const auto end = name.rfind(']');
+    return name.substr(start, end - start);
+}
+
+int main(int argc, char** argv) {
+    CLI::App app{"GridFire Sandbox Application."};
+
+    std::string outputPath = ".";
+
+    app.add_option("-p,--path", outputPath, "path to save generated config files (default: current directory)");
+
+    CLI11_PARSE(app, argc, argv);
+
+    const std::filesystem::path outPath(outputPath);
+    if (!std::filesystem::exists(outPath)) {
+        std::cerr << "Error: The specified path does not exist: " << outputPath << std::endl;
+        return 1;
+    }
+
+    fourdst::config::Config<gridfire::config::GridFireConfig> configConfig;
+    const std::string_view name = strip_namespaces(get_type_name<gridfire::config::GridFireConfig>());
+
+    const std::string defaultConfigFilePath = (outPath / (std::string(name) + ".toml")).string();
+    const std::string schemaFilePath = (outPath / (std::string(name) + ".schema.json")).string();
+    configConfig.save(defaultConfigFilePath);
+    configConfig.save_schema(schemaFilePath);
+}