Add c unity package (#2371)

* Add c unity package

* update postions and version

* Update and rename xmake.lua to xmake.lua

* Update xmake.lua

---------

Co-authored-by: ruki <waruqi@gmail.com>

packages/u/unity_test/xmake.lua

@@ -0,0 +1,29 @@
+package("unity_test")
+    set_homepage("http://www.throwtheswitch.org/unity")
+    set_description("Simple Unit Testing for C")
+    set_license("MIT")
+
+    add_urls("https://github.com/ThrowTheSwitch/Unity/archive/refs/tags/$(version).tar.gz",
+             "https://github.com/ThrowTheSwitch/Unity.git")
+
+    add_versions("v2.5.2", "3786de6c8f389be3894feae4f7d8680a02e70ed4dbcce36109c8f8646da2671a")
+    add_versions("v2.5.1", "5ce08ef62f5f64d18f8137b3eaa6d29199ee81d1fc952cef0eea96660a2caf47")
+    add_versions("v2.5.0", "d470165dc46652cf73fda54e2650b483b94a7e24ccf793ded28615729b2f41ed")
+    add_versions("v2.4.3", "a8c5e384f511a03c603bbecc9edc24d2cb4a916998d51a29cf2e3a2896920d03")
+
+    add_deps("cmake")
+
+    on_install(function (package)
+        local configs = {"-DUNITY_EXTENSION_FIXTURE=ON", "-DUNITY_EXTENSION_MEMORY=ON"}
+        table.insert(configs, "-DCMAKE_BUILD_TYPE=" .. (package:debug() and "Debug" or "Release"))
+        table.insert(configs, "-DBUILD_SHARED_LIBS=" .. (package:config("shared") and "ON" or "OFF"))
+        import("package.tools.cmake").install(package, configs)
+    end)
+
+    on_test(function (package)
+        assert(package:check_csnippets({test = [[
+            void test_main(void) {
+                TEST_ASSERT_EQUAL_INT(1, 1);
+            }
+        ]]}, {includes = "unity/unity.h"}))
+    end)