Console and CSV output as pugins

include/api.hpp

@@ -18,7 +18,19 @@ struct SolutionPoint{
     double x3;
 };
 
-inline constexpr std::uint32_t PLUGIN_API_VERSION = 1; 
+enum PluginType{
+    Solver,
+    Output
+};
+
+struct OutputParameters{
+    const char* solver_name;
+    const char* destination_path;
+    const SolutionPoint* points;
+    size_t point_count;
+};
+
+inline constexpr std::uint32_t PLUGIN_API_VERSION = 2;
 
 #if defined(_WIN32) && defined(PLUGIN_BUILD)
 #define PLUGIN_EXPORT extern "C" __declspec(dllexport)
@@ -29,17 +41,20 @@ inline constexpr std::uint32_t PLUGIN_API_VERSION = 1;
 #endif
 
 using plugin_api_version_fn = std::uint32_t (*)();
+using plugin_type_fn = PluginType (*)();
 using plugin_text_fn = const char* (*)();
-using function_run_fn = void (*)(
+using solver_run_fn = void (*)(
     const SolverParameters*,
     SolutionPoint*,
-    std::size_t
+    size_t
 );
+using output_write_fn = int (*)(const OutputParameters*);
 
 inline constexpr const char* SYMBOL_API_VERSION =
     "plugin_api_version";
+inline constexpr const char* SYMBOL_TYPE = "plugin_type";
 inline constexpr const char* SYMBOL_NAME = "plugin_name";
-inline constexpr const char* SYMBOL_DESCRIPTION =
-    "plugin_description";
-inline constexpr const char* SYMBOL_FUNCTION = "func";
+inline constexpr const char* SYMBOL_DESCRIPTION = "plugin_description";
+inline constexpr const char* SYMBOL_TRANSFORM = "transform";
+inline constexpr const char* SYMBOL_WRITE_OUTPUT = "write_output";