Add Loader stats source files.

src/loader/utils/stats.h

@@ -0,0 +1,13 @@
+#pragma once
+
+#include <bpf.h>
+#include <libbpf.h>
+#include <xdp/libxdp.h>
+
+#include  <common/all.h>
+
+#include <loader/utils/cmdline.h>
+#include <loader/utils/config.h>
+#include <loader/utils/helpers.h>
+
+int CalculateStats(int stats_map, int cpus);