hooklib: Split out of util

This is distinct from capnhook's hooklib, although the intent is
the same. Hopefully these two libraries sharing a name won't get
too confusing...

cardhook/dllmain.c

@@ -5,9 +5,9 @@
 #include "hook/process.h"
 
 #include "hooklib/serial.h"
+#include "hooklib/spike.h"
 
 #include "util/dprintf.h"
-#include "util/spike.h"
 
 static process_entry_t app_startup;
 

cardhook/meson.build

@@ -11,6 +11,7 @@ shared_library(
     link_with : [
         aimeio_dll,
         board_lib,
+        hooklib_lib,
         util_lib,
     ],
     sources : [