cpp20-http-client: add package (#2445)

* cpp20-http-client: add package

* fix deps

packages/c/cpp20-http-client/xmake.lua

@@ -0,0 +1,50 @@
+package("cpp20-http-client")
+    set_homepage("https://github.com/avocadoboi/cpp20-http-client")
+    set_description("An HTTP(S) client library for C++20.")
+    set_license("MIT")
+
+    add_urls("https://github.com/avocadoboi/cpp20-http-client.git")
+
+    add_versions("2023.08.11", "bb011a055a1813a4fb2a0b67db0ffa455221aaf8")
+
+    if is_plat("windows") then
+        add_syslinks("ws2_32", "crypt32")
+    else
+        add_deps("openssl")
+    end
+
+    on_install("windows", "linux", "macosx", "bsd", "android", "cross", function (package)
+        io.writefile("xmake.lua", [[
+            add_rules("mode.debug", "mode.release")
+            if not is_plat("windows") then
+                add_requires("openssl")
+            end
+            set_languages("c++20")
+            target("cpp20-http-client")
+                set_kind("$(kind)")
+                add_files("source/**.cpp")
+                add_includedirs("include")
+                add_headerfiles("include/**.hpp")
+                if is_plat("windows") then
+                    add_cxxflags("/utf-8")
+                    add_syslinks("ws2_32", "crypt32")
+                    if is_kind("shared") then
+                        add_rules("utils.symbols.export_all", {export_classes = true})
+                    end
+                else
+                    add_packages("openssl")
+                end
+        ]])
+        import("package.tools.xmake").install(package, configs)
+    end)
+
+    on_test(function (package)
+        assert(package:check_cxxsnippets({test = [[
+            #include <cpp20_http_client.hpp>
+            void test() {
+                auto const response = http_client::get("https://www.google.com")
+                    .add_header({.name="HeaderName", .value="header value"})
+                    .send();
+            }
+        ]]}, {configs = {languages = "c++20"}}))
+    end)