rang: add package (#2517)

packages/r/rang/xmake.lua

@@ -0,0 +1,22 @@
+package("rang")
+    set_kind("library", {headeronly = true})
+    set_homepage("https://agauniyal.github.io/rang/")
+    set_description("A Minimal, Header only Modern c++ library for terminal goodies 💄✨")
+    set_license("Unlicense")
+
+    add_urls("https://github.com/agauniyal/rang.git")
+    add_versions("2022.07.01", "22345aa4c468db3bd4a0e64a47722aad3518cc81")
+
+    on_install(function (package)
+        os.cp("include", package:installdir())
+    end)
+
+    on_test(function (package)
+        assert(package:check_cxxsnippets({test = [[
+            #include <iostream>
+            #include <rang.hpp>
+            void test() {
+                std::cout << "Plain old text" << rang::style::bold;
+            }
+        ]]}, {configs = {languages = "c++11"}}))
+    end)