add meowhash (#661)

* add meowhash

* Update xmake.lua

packages/m/meowhash/xmake.lua

@@ -0,0 +1,21 @@
+package("meowhash")
+
+    set_kind("library", {headeronly = true})
+    set_homepage("https://mollyrocket.com/meowhash")
+    set_description("Official version of the Meow hash, an extremely fast level 1 hash")
+
+    add_urls("https://github.com/cmuratori/meow_hash.git")
+
+    add_versions("1.0.0", "b080caa7e51576fe3151c8976110df7966fa6a38")
+
+    if is_plat("linux", "macosx", "bsd") then
+        add_cxflags("-maes", "-mpclmul", "-mssse3")
+    end
+
+    on_install("macosx", "windows", "linux", "bsd", function (package)
+        os.cp("meow_hash_x64_aesni.h", package:installdir("include"))
+    end)
+
+    on_test(function (package)
+        assert(package:has_cfuncs("MeowHash", {includes = "meow_hash_x64_aesni.h"}))
+    end)