Put more language on dogfooding

[aldy505]

Now we're using Pesto on our own Telegram group (via a bot, obviously). But on the dogfood directory that we use to do e2e test after the rce docker image has been built, we only test Javascript and Lua.

We need to test more languages. Primarily Go, Java, and .NET. Those 3 tend to fail for some reason.

Just create a new test there and we're good to go. It the test does not pass, we should modify the default setting on each package.