Add initial header file

This will be used in the client and the daemon

guestfs-inspectd.c

@@ -4,6 +4,8 @@
 #include <zactor.h>
 #include <guestfs.h>
 
+#include "libguestfs-inspect.h"
+
 #define STREQ(a, b) (strcmp((a), (b)) == 0)
 
 void *worker_task;