Move back to C

I'm insane and as such I have moved to C AGAIN! Without any reason.

utilities/file_utils.h

@@ -0,0 +1,17 @@
+#ifndef RSE_FILE_UTILS_H
+#define RSE_FILE_UTILS_H
+
+#include <stddef.h>
+
+/**
+ * @brief Reads file and puts its content into char buffer. If NULL is provided as buffer, than just bytes_count
+ * is set
+ *
+ * @param file_path Path to file
+ * @param bytes_count Returned bytes count
+ * @param buffer Returned filled buffer
+ */
+void read_file(const char* file_path, long* bytes_count, char* buffer);
+
+#endif /* RSE_FILE_UTILS_H */
+