eventpp: add package (#2756)

packages/e/eventpp/xmake.lua

@@ -0,0 +1,25 @@
+package("eventpp")
+    set_kind("library", {headeronly = true})
+    set_homepage("https://github.com/wqking/eventpp")
+    set_description("Event Dispatcher and callback list for C++")
+    set_license("Apache-2.0")
+
+    add_urls("https://github.com/wqking/eventpp/archive/refs/tags/$(version).tar.gz",
+             "https://github.com/wqking/eventpp.git")
+
+    add_versions("v0.1.3", "d87aba67223fd9aced2ba55eb82bd534007e43e1b919106a53fcd3070fa125ea")
+
+    add_deps("cmake")
+
+    on_install(function (package)
+        import("package.tools.cmake").install(package, {"-DEVENTPP_INSTALL=ON"})
+    end)
+
+    on_test(function (package)
+        assert(package:check_cxxsnippets({test = [[
+            #include <eventpp/callbacklist.h>
+            void test() {
+                eventpp::CallbackList<void (const std::string &, const bool)> callbackList;
+            }
+        ]]}, {configs = {languages = "c++11"}}))
+    end)