hedley: add package (#2793)

packages/h/hedley/xmake.lua

@@ -0,0 +1,22 @@
+package("hedley")
+    set_kind("library", {headeronly = true})
+    set_homepage("https://nemequ.github.io/hedley/")
+    set_description("A C/C++ header to help move #ifdefs out of your code")
+    set_license("CC0-1.0")
+
+    add_urls("https://github.com/nemequ/hedley/archive/refs/tags/$(version).tar.gz",
+             "https://github.com/nemequ/hedley.git")
+
+    add_versions("v15", "e91c71b58f59d08c7b8289be8f687866863d934dfaa528e4be30b178139ae863")
+
+    on_install(function (package)
+        os.cp("hedley.h", package:installdir("include/hedley"))
+    end)
+
+    on_test(function (package)
+        assert(package:check_cxxsnippets({test = [[
+            #include <hedley/hedley.h>
+            HEDLEY_NO_RETURN
+            void test() {}
+        ]]}))
+    end)