Added time.sleep function

lib/time/time.q

@@ -0,0 +1,21 @@
+import mem
+import sys
+
+sleep(nanoseconds Int) {
+	seconds := 0
+
+	loop {
+		if nanoseconds >= 1000000000 {
+			nanoseconds = nanoseconds - 1000000000
+			seconds += 1
+		} else {
+			timespec := mem.alloc(16)
+			store(timespec, 8, seconds)
+			offset := timespec + 8
+			store(offset, 8, nanoseconds)
+			sys.nanosleep(timespec)
+			mem.free(timespec, 16)
+			return
+		}
+	}
+}