feat: added cross compiler and moved headers to include dir

kernel/util/stream.c

@@ -5,7 +5,7 @@
 #include <mem/malloc.h>
 #include <libc/libc.h>
 #include <tasks/locking.h>
-#include "stream.h"
+#include <util/stream.h>
 
 struct stream {
     uint8_t *data;