pcg-cpp: add package (#2448)

packages/p/pcg-cpp/xmake.lua

@@ -0,0 +1,23 @@
+package("pcg-cpp")
+    set_kind("library", {headeronly = true})
+    set_homepage("http://www.pcg-random.org")
+    set_description("PCG — C++ Implementation")
+    set_license("Apache-2.0")
+
+    add_urls("https://github.com/imneme/pcg-cpp.git")
+    add_versions("2022.04.09", "428802d1a5634f96bcd0705fab379ff0113bcf13")
+
+    on_install(function (package)
+        os.cp("include", package:installdir())
+    end)
+
+    on_test(function (package)
+        assert(package:check_cxxsnippets({test = [[
+            #include <random>
+            #include <pcg_random.hpp>
+            void test() {
+                pcg_extras::seed_seq_from<std::random_device> seed_source;
+                pcg32 rng(seed_source);
+            }
+        ]]}, {configs = {languages = "c++11"}}))
+    end)