replacing std thread by tinycthread

Xmake/packages/t/tinycthread/xmake.lua

@@ -0,0 +1,21 @@
+package("tiny-c-thread")
+	set_homepage("https://github.com/tinycthread/tinycthread")
+    set_description("A small, portable implementation of the C11 threads API.")
+    set_license("MIT")
+
+    add_urls("https://github.com/tinycthread/tinycthread.git")
+
+	on_install(function (package)
+        io.writefile("xmake.lua", [[
+            add_rules("mode.debug", "mode.release")
+            target("tiny-c-thread")
+                set_kind("static")
+                add_files("source/*.c")
+                add_headerfiles("source/*.h")
+        ]])
+        import("package.tools.xmake").install(package)
+    end)
+
+    on_test(function (package)
+        assert(package:has_ctypes("thrd_t", {configs = {languages = "c11"}, includes = "tinycthread.h"}))
+    end)