cthash: add package (#2761)

packages/c/cthash/xmake.lua

@@ -0,0 +1,23 @@
+package("cthash")
+    set_kind("library", {headeronly = true})
+    set_homepage("https://github.com/hanickadot/cthash")
+    set_description("constexpr implementation of SHA-2 and SHA-3 family of hashes")
+    set_license("Apache-2.0")
+
+    add_urls("https://github.com/hanickadot/cthash.git")
+    add_versions("2023.10.24", "21d581e0a6bd7040c282af1e43faab9d44f47744")
+
+    on_install("linux", "macosx", "bsd", "mingw", "msys", "android", "iphoneos", "cross", "wasm", function (package)
+        os.cp("include", package:installdir())
+    end)
+
+    on_test(function (package)
+        assert(package:check_cxxsnippets({test = [[
+            #include <cthash/cthash.hpp>
+            using namespace cthash::literals;
+            void test() {
+                constexpr auto my_hash = cthash::simple<cthash::sha3_256>("hello there!");
+                static_assert(my_hash == "c7fd85f649fba4bd6fb605038ae8530cf2239152bbbcb9d91d260cc2a90a9fea"_sha3_256);
+            }
+        ]]}, {configs = {languages = "c++20"}}))
+    end)