croncpp: add package (#5171)

packages/c/croncpp/xmake.lua

@@ -0,0 +1,27 @@
+package("croncpp")
+    set_kind("library", {headeronly = true})
+    set_homepage("https://github.com/mariusbancila/croncpp")
+    set_description("A C++11/14/17 header-only cross-platform library for handling CRON expressions")
+    set_license("MIT")
+
+    add_urls("https://github.com/mariusbancila/croncpp/archive/refs/tags/$(version).tar.gz",
+             "https://github.com/mariusbancila/croncpp.git")
+
+    add_versions("v2023.03.30", "0731b7f900a670c009585eb5e9639722aeff6531dbbd5bfc9ce895459733837e")
+
+    on_install(function (package)
+        os.cp("include", package:installdir())
+    end)
+
+    on_test(function (package)
+        assert(package:check_cxxsnippets({test = [[
+            #include <iostream>
+            #include <ctime>
+            int main() {
+                auto cr = cron::make_cron("* 0/5 * * * ?");
+                auto time = cron::utils::to_tm("2024-08-28 20:01:00");
+                auto next = cron::cron_next(cr, time);
+                std::cout << std::asctime(&next);
+            }
+        ]]}, {configs = {languages = "c++14"}, includes = "croncpp.h"}))
+    end)