add libdivide (#991)

* add libdivide

* Update xmake.lua

packages/l/libdivide/xmake.lua

@@ -0,0 +1,17 @@
+package("libdivide")
+    set_kind("library", {headeronly = true})
+    set_homepage("http://libdivide.com")
+    set_description("Official git repository for libdivide: optimized integer division")
+
+    add_urls("https://github.com/ridiculousfish/libdivide/archive/refs/tags/$(version).tar.gz",
+             "https://github.com/ridiculousfish/libdivide.git")
+    add_versions("5.0", "01ffdf90bc475e42170741d381eb9cfb631d9d7ddac7337368bcd80df8c98356")
+
+    on_install(function (package)
+        os.cp("*.h", package:installdir("include"))
+        os.cp("*.hpp", package:installdir("include"))
+    end)
+
+    on_test(function (package)
+        assert(package:has_cfuncs("libdivide_s16_gen(0)", {includes = "libdivide.h"}))
+    end)