Chinese language support

[ttimasdf]

Building on the previous point: #3270 (comment),

I managed to get zh_Hans working in vue 2 (current branch) by symlinking vue/src/locales/zh.json to vue/src/locales/zh_Hans.json at ttimasdf@63d59cc . Although it works for me, it prevents Traditional Chinese translations in frontend from being applied.

This change is rather opinionated. since:

1. I, as a native speaker of Simplified Chinese, can read Traditional Chinese seamlessly and I assume native zh_hant speakers may or may not be the same correspondingly.
2. But Traditional Chinese translation also breaks at the moment 😗, (i.e. do not appear as an option in language selection list.)

So, since making simplified Chinese the default of these two languages may be a viable workaround before any backport is available, I would respect the opinions of traditional Chinese users and of maintainers.

[ttimasdf]

For anyone interested in a Chinese build, please check out the CI builds at custom branch in my fork.

需要中文的用户，可以测试一下我分支里面打包好的容器👇

docker pull ghcr.io/ttimasdf/tandoor-recipes:custom

[CLAassistant]

All committers have signed the CLA.

[vabene1111]

thank you very much for the work you have put into this. To be honst your second commend kinda solved the issue for me because I do not plan on making any noteworthy changes to tandoor until Vue 3. This means people can safely use your fork for a few more month (hopefully, work has been a bit slow on my part) and then just switch to my branch of tandoor again as soon as the new version is out (or as soon as they want to).

Do you think this is a good solution?