Add memory functions

src_features/signMessageEIP712/mem.h

@@ -0,0 +1,13 @@
+#ifndef MEM_H_
+#define MEM_H_
+
+#include <stdlib.h>
+
+#define SIZE_MEM_BUFFER 1024
+
+void    mem_init(void);
+void    mem_reset(void);
+void    *mem_alloc(size_t size);
+void    mem_dealloc(size_t size);
+
+#endif // MEM_H_