table: add more `noexcept`

Also merge fib-nexthop.hpp into fib-entry.hpp

Change-Id: Iec2fb90ede446f5b8d326c882904c70db45b87d6
diff --git a/tests/daemon/mgmt/fib-manager.t.cpp b/tests/daemon/mgmt/fib-manager.t.cpp
index 5da697b..3ba725d 100644
--- a/tests/daemon/mgmt/fib-manager.t.cpp
+++ b/tests/daemon/mgmt/fib-manager.t.cpp
@@ -1,6 +1,6 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
 /*
- * Copyright (c) 2014-2023,  Regents of the University of California,
+ * Copyright (c) 2014-2024,  Regents of the University of California,
  *                           Arizona Board of Regents,
  *                           Colorado State University,
  *                           University Pierre & Marie Curie, Sorbonne University,
@@ -24,7 +24,7 @@
  */
 
 #include "mgmt/fib-manager.hpp"
-#include "table/fib-nexthop.hpp"
+#include "table/fib-entry.hpp"
 
 #include "manager-common-fixture.hpp"
 #include "tests/daemon/face/dummy-face.hpp"