add olive.c (#1761)

* add olive.c

* fix windows

* fix windows

packages/o/olive.c/xmake.lua

@@ -0,0 +1,17 @@
+package("olive.c")
+    set_kind("library", {headeronly = true})
+    set_homepage("https://tsoding.github.io/olive.c/")
+    set_description("Simple 2D Graphics Library for C")
+    set_license("MIT")
+
+    add_urls("https://github.com/tsoding/olive.c.git")
+    add_versions("2022.12.14", "95af28b808a243098fe7866e8035b24c3fe28ea1")
+
+    on_install(function (package)
+        os.cp("olive.c", package:installdir("include"))
+    end)
+
+    on_test(function (package)
+        assert(package:has_cfuncs("olivec_fill", {includes = "olive.c",
+            configs = {defines = "OLIVEC_IMPLEMENTATION"}}))
+    end)