add zh cn translation

[xgdgsc]

Fixes #2041 .

[pfitzseb]

Very cool!
Is there a writeup of this somewhere in the VS Code docs? I'm kinda curious about how localizing other strings works.

[xgdgsc]

https://github.com/microsoft/vscode-nls official one lacks doc, and there's a third party one https://github.com/axetroy/vscode-nls-i18n

[davidanthoff]

Very nice! Two questions:

1. Can the translation files be moved into a sub folder? Root is already pretty busy and this has the potential to add a lot more files, right?
2. What happens if we add a new command and don't provide a translation for a given language? Will it automatically fall back to English? Primarily I'm wondering what the process would look for someone who wants to add a new feature but is not familiar with some of the languages that are supported in the extension. Can someone like that just add something in English and everything will work?

I think the final question is how we would maintain this long term. @xgdgsc do you plan to keep updating this and tracking new additions to the extension and then translating them?

[xgdgsc]

1. https://github.com/microsoft/vscode-extension-samples/tree/main/i18n-sample found a sample of subfolder.
2. It would auto fallback to English.
3. I would like to maintain the zh cn translation in long term.

[xgdgsc]

I couldn' t get the subfolder working because I didn' t find how ISO 639-3 works for simplified chinese.

[xgdgsc]

Found an example https://github.com/microsoft/vscode-cmake-tools/tree/main/i18n , which requires gulp. But the translation doesn' t appear on my computer.

[xgdgsc]

Found the bug in cmake tools repo that cause zh-cn translation not showing. Is it necessary to use the subfolder? I find that approach an additional complexity. The nls files are generated from the subfolder to the root folder anyway.

I found python extension uses a more sophisticated approach which also doesn' t work.

[pfitzseb]

I don't mind these being in /. Let's merge this, @davidanthoff?

[xgdgsc]

I find the flat modern UI with no icon so hard to locate menu items. After some time of using, I feel the translation is not for the meaning of words (which should be very easy for current julia users here), but for quickly locating of desired command item through a glimpse with Chinese charaters acting as icons. Hope these get merged.