semver: add package (#2489)

packages/s/semver/xmake.lua

@@ -0,0 +1,20 @@
+package("semver")
+    set_homepage("https://github.com/Neargye/semver")
+    set_description("Semantic Versioning for modern C++")
+    set_license("MIT")
+
+    add_urls("https://github.com/Neargye/semver.git")
+    add_versions("2023.05.27", "492ba1beb1da6a4f150b8ca45985290f152396ed")
+
+    on_install(function (package)
+        os.cp("include", package:installdir())
+    end)
+
+    on_test(function (package)
+        assert(package:check_cxxsnippets({test = [[
+            #include <semver.hpp>
+            void test() {
+                constexpr semver::version v1{1, 4, 3};
+            }
+        ]]}, {configs = {languages = "c++17"}}))
+    end)