Kernel/LibC: Implement super basic select

This does not really even block but it works... :D

libc/include/bits/types/timeval.h

@@ -0,0 +1,20 @@
+#ifndef _BITS_TIMEVAL_H
+#define _BITS_TIMEVAL_H 1
+
+#include <sys/cdefs.h>
+
+__BEGIN_DECLS
+
+#define __need_time_t
+#define __need_suseconds_t
+#include <sys/types.h>
+
+struct timeval
+{
+	time_t		tv_sec;		/* Seconds. */
+	suseconds_t	tc_usec;	/* Microseconds. */
+};
+
+__END_DECLS
+
+#endif