Add ultralight package (#3065)

* Add ultralight package

* ultralight: fix linux platform compatibility

* ultralight: fix install failure on some platforms

* ultralight: fix syntax error

* ultralight: using os.trycp instead of if

packages/u/ultralight/xmake.lua

@@ -0,0 +1,40 @@
+package("ultralight")
+    set_homepage("https://ultralig.ht")
+    set_description("Ultralight makes it easy for C/C++ developers to seamlessly integrate web-content into games and desktop apps.")
+    set_license("LGPL")
+
+    if is_plat("windows") then
+        add_urls("https://github.com/ultralight-ux/Ultralight/releases/download/v1.3.0/ultralight-sdk-1.3.0-win-x64.7z")
+        add_versions("1.3.0", "cc8bfc66a4c40c88fa02691febe6f21c248a2a30d17cfe5470fccc3a461ce49e")
+    elseif is_plat("linux") then
+        add_urls("https://github.com/ultralight-ux/Ultralight/releases/download/v1.3.0/ultralight-sdk-1.3.0-linux-x64.7z")
+        add_versions("1.3.0", "1de6298b5ed3c5e0c22ac27e0e30fcb0ba6d195467a58ee44ef4e13dd1a6d352")
+    elseif is_plat("macosx") then
+        add_urls("https://github.com/ultralight-ux/Ultralight/releases/download/v1.3.0/ultralight-sdk-1.3.0-mac-x64.7z")
+        add_versions("1.3.0", "bbf81ed456a617a60a19e9a76946e4479d5bac877f859005c50f66e9ec3c77a2")
+    end
+
+    add_configs("shared", {description = "Build shared library.", default = true, type = "boolean", readonly = true})
+
+    on_install("windows|x64", "linux|x86_64", "macosx|x86_64", function (package)
+        if package:is_plat("linux") then
+            if linuxos.name() ~= "ubuntu" and linuxos.name() ~= "debian" or (linuxos.version():major() < 9 and linuxos.version():minor() < 5) then
+                print("Ultralight is officially supported on Ubuntu/Debian 9.5+. use it at your own risks")
+            end
+        end
+        os.cp("include", package:installdir())
+        os.trycp("lib", package:installdir())
+        os.trycp("bin", package:installdir())
+    end)
+
+    on_test(function (package)
+         assert(package:check_cxxsnippets({test = [[
+            #include <AppCore/App.h>
+            #include <Ultralight/platform/Platform.h>
+
+            void test()
+            {
+                auto app = ultralight::App::Create();
+            }
+        ]]}, {configs = {languages = "c++17"}}))
+    end)