Fix: Added uasync_t typedef, fixed packet normalizer compilation, completed crypto fixes. Crypto fully working with all tests passing.

src/tun_if.c

@@ -1,7 +1,7 @@
 // tun_if.c - TUN interface management implementation
 #define _POSIX_C_SOURCE 200809L
 #include "tun_if.h"
-#include "debug_config.h"
+#include "../lib/debug_config.h"
 
 #include <stdio.h>
 #include <stdlib.h>