Prepare for event system

Moved stuff around.
Create an entry point for RSE.
Created base for events module

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

red_scarf_engine/red_scarf_engine.h

@@ -0,0 +1,23 @@
+/**
+ * @file red_scarf_engine.h
+ * @author Piotr Krygier (piotrkrygier@everyonencancode.xyz)
+ * @brief Red Scarf Engine main entry point
+ * @version 0.1
+ * @date 2026-03-03
+ *
+ * @copyright Copyright (c) 2026
+ *
+ */
+
+#ifndef RED_SCARF_ENGINE_H_
+#define RED_SCARF_ENGINE_H_
+
+#include "utilities/commons.h"
+#include "utilities/errors_common.h"
+
+typedef struct rse_context_t* rse_context;
+
+rse_err_t rse_init(rse_context* context);
+rse_err_t rse_run(rse_context context);
+
+#endif /* RED_SCARF_ENGINE_H_ */