uthash: add package (#2303)

packages/u/uthash/xmake.lua

@@ -0,0 +1,26 @@
+package("uthash")
+    set_kind("library", {headeronly = true})
+    set_homepage("https://troydhanson.github.io/uthash")
+    set_description("C macros for hash tables and more")
+
+    add_urls("https://github.com/troydhanson/uthash.git")
+    add_versions("2023.7.11", "ca98384ce7f30beb216f9a0bc88a3b4340ead729")
+
+    on_install(function (package)
+        os.cp("src/*.h", package:installdir("include"))
+    end)
+
+    on_test(function (package)
+        assert(package:check_csnippets({test = [[
+            #include <uthash.h>
+            struct my_struct {
+                int id;
+                char name[10];
+                UT_hash_handle hh;
+            };
+            struct my_struct *users = NULL;
+            void test(struct my_struct *s) {
+                HASH_ADD_INT( users, id, s );
+            }
+        ]]}))
+    end)