feat: implement db provider

include/engine/core/engine_module_api.hpp

@@ -2,24 +2,33 @@
 #define __MSC_ENGINE_MODULE_API_HPP__
 
 #include <engine/core/engine_bus.hpp>
-#include <engine/core/engine_module.hpp>
+#include <engine/core/engine_db_provider.hpp>
 #include <cstdint>
 #include <string>
 #include <unordered_map>
+#include <memory>
+
+class MscEngineModule;
 
 class IMscEngineModuleAPI
 {
 public:
   virtual ~IMscEngineModuleAPI() = default;
 
-  /// Get access to engine event bus
+  /// @brief Get access to engine event bus
   virtual MscEventBus &getBus() = 0;
 
-  /// Get access to loaded module list
+  /// @brief Get access to loaded module list
   virtual std::unordered_map<std::string, std::uint16_t> getLoadedModules() const = 0;
 
-  /// Access module by its name
+  /// @brief Access module by its name
   virtual MscEngineModule &getModule(const std::string &name) = 0;
+
+  /// @brief Create database provider with in-memory database
+  virtual std::unique_ptr<MscEngineDBProvider> createDBProvider() = 0;
+
+  /// @brief Create database provider with file database
+  virtual std::unique_ptr<MscEngineDBProvider> createDBProvider(const std::string &filepath) = 0;
 };
 
 #endif // __MSC_ENGINE_MODULE_API_HPP__