add nod (#1210)

packages/n/nod/xmake.lua

@@ -0,0 +1,27 @@
+package("nod")
+    set_kind("library", {headeronly = true})
+    set_homepage("https://github.com/fr00b0/nod")
+    set_description("Small, header only signals and slots C++11 library.")
+    set_license("MIT")
+
+    add_urls("https://github.com/fr00b0/nod/archive/refs/tags/$(version).tar.gz",
+             "https://github.com/fr00b0/nod.git")
+    add_versions("v0.5.4", "21ec7e5ea5af9fc823f1a36f6981e307321f7b4f3fd8362620a7f3529fc19aed")
+
+    on_install(function (package)
+        os.cp("include/*", package:installdir("include"))
+    end)
+
+    on_test(function (package)
+        assert(package:check_cxxsnippets({test = [[
+            #include <iostream>
+            void test()
+            { 
+                nod::signal<void()> signal;
+                signal.connect([](){
+                    std::cout << "Hello, World!" << std::endl;
+                });
+                signal();
+            }
+        ]]}, {configs = {languages = "c++11"}, includes = { "nod/nod.hpp" } }))
+    end)