feat: implement db provider

src/engine/core/engine.cpp

@@ -84,3 +84,13 @@ MscEngineModule &MscEngine::getModule(const std::string &name)
 
   throw std::runtime_error("Module not found: " + name);
 }
+
+std::unique_ptr<MscEngineDBProvider> MscEngine::createDBProvider()
+{
+  return std::make_unique<MscEngineDBProvider>();
+}
+
+std::unique_ptr<MscEngineDBProvider> MscEngine::createDBProvider(const std::string &filepath)
+{
+  return std::make_unique<MscEngineDBProvider>(filepath);
+}