Implement event handler

Added event handler implementation.
Moved enginge specific implementation outside graphics module

Signed-off-by: Piotr Krygier <piotrkrygier@everyonecancode@xyz>

graphics/rse_graphics.h

@@ -18,13 +18,17 @@ rse_err_t rse_graphics_init(struct graphics_context_t* context);
  *
  * @return rse_err_t RSE_ERROR_NO_ERROR on success
  */
-rse_err_t rse_graphics_main_loop(struct graphics_context_t* context);
+rse_err_t rse_graphics_run(struct graphics_context_t* context);
 
 
+rse_err_t rse_graphics_main_loop(struct graphics_context_t* context);
+
 /**
  * @brief Custom function for testing engine. TODO: Remove it whe releasing
  *
  */
 rse_err_t rse_graphics_test_function(struct graphics_context_t* context);
 
+void rse_graphics_deinit(struct graphics_context_t* context);
+
 #endif /* RSE_GRAPHICS_H */