add debugbreak (#913)

* add debugbreak

* Update xmake.lua

packages/d/debugbreak/xmake.lua

@@ -0,0 +1,16 @@
+package("debugbreak")
+    set_kind("library", {headeronly = true})
+    set_homepage("https://github.com/scottt/debugbreak")
+    set_description("break into the debugger programmatically")
+
+    add_urls("https://github.com/scottt/debugbreak/archive/refs/tags/$(version).tar.gz",
+             "https://github.com/scottt/debugbreak.git")
+    add_versions("v1.0", "62089680cc1cd0857519e2865b274ed7534bfa7ddfce19d72ffee41d4921ae2f")
+
+    on_install(function (package)
+        os.cp("debugbreak.h", package:installdir("include"))
+    end)
+
+    on_test(function (package)
+        assert(package:has_cfuncs("debug_break()", {includes = "debugbreak.h"}))
+    end)