Add ordered_map (#1233)

* Add ordered_map

* Update xmake.lua

* Update xmake.lua

Co-authored-by: ruki <waruqi@gmail.com>

packages/o/ordered_map/xmake.lua

@@ -0,0 +1,34 @@
+package("ordered_map")
+
+    set_kind("library", {headeronly = true})
+    set_homepage("https://github.com/Tessil/ordered-map")
+    set_description("C++ hash map and hash set which preserve the order of insertion")
+    set_license("MIT")
+
+    set_urls("https://github.com/Tessil/ordered-map/archive/refs/tags/$(version).tar.gz",
+             "https://github.com/Tessil/ordered-map.git")
+
+    add_versions("v1.0.0", "49cd436b8bdacb01d5f4afd7aab0c0d6fa57433dfc29d65f08a5f1ed1e2af26b")
+
+    on_install(function (package)
+        os.cp("include/tsl", package:installdir("include"))
+    end)
+
+    on_test(function (package)
+        assert(package:check_cxxsnippets({test = [[
+            #include <iostream>
+            void test()
+            {
+                tsl::ordered_map<char, int> map = {{'d', 1}, {'a', 2}, {'g', 3}};
+                map.insert({'b', 4});
+                map['h'] = 5;
+                map['e'] = 6;
+                map.erase('a');
+
+                // {d, 1} {g, 3} {b, 4} {h, 5} {e, 6}
+                for(const auto& key_value : map) {
+                    std::cout << "{" << key_value.first << ", " << key_value.second << "}" << std::endl;
+                }
+            }
+        ]]}, {configs = {languages = "c++11"}, includes = { "tsl/ordered_map.h"} }))
+    end)