feat(lvl09/ressources): adding the hex_to_ascii convertisseur

- The way to take the password of flag09 user

level09/ressources/hex_to_ascii.c

@@ -0,0 +1,9 @@
+#include <stdio.h>
+
+int main(void) {
+	char to_convert[] = {0x66, 0x34, 0x6b, 0x6d, 0x6d, 0x36, 0x70, 0x7c, 0x3d, 0x82, 0x7f, 0x70, 0x82, 0x6e, 0x83, 0x82, 0x44, 0x42, 0x83, 0x44, 0x75, 0x7b, 0x7f, 0x8c, 0x89, 0};
+	for (size_t i = 0; to_convert[i]; i++) {
+		putchar(to_convert[i] - i);
+	}
+	putchar('\n');
+}