add strings_h2 (#2957)

packages/s/strings_h/xmake.lua

@@ -0,0 +1,23 @@
+package("strings_h")
+    set_kind("library", {headeronly = true})
+    set_homepage("https://github.com/win32ports/strings_h")
+    set_description("header-only Windows implementation of the <strings.h> header")
+    set_license("MIT")
+
+    add_urls("https://github.com/win32ports/strings_h.git")
+    add_versions("2023.03.17", "822de6e8c368abb986b403792082189f3c602c45")
+
+    on_install("windows", function (package)
+        os.cp("strings.h", package:installdir("include"))
+    end)
+
+    on_test(function (package)
+        assert(package:check_csnippets({test = [[
+            #include <strings.h>
+                    
+            void test() {
+                char buffer[6];
+                bcopy("hello", buffer, 5);
+            }
+        ]]}))
+    end)