feat(tool): add a header to include all the utilities

include/tools

@@ -0,0 +1,17 @@
+#pragma once
+#include "bit.h"
+#include "bit_impl.h"
+#include "wire.h"
+#include "register.h"
+#include "synchronize.h"
+#include "operator.h"
+
+using dark::Bit;
+using dark::sign_extend;
+using dark::zero_extend;
+
+using dark::Wire;
+using dark::Register;
+
+using dark::SyncTags;
+using dark::sync_member;