Support for "arduino" language id

[robertohuertasm]

Hi, I'm maintaining vscode-icons and we want to add support for the arduino icon using the language id vscode-icons#1117.

I've seen that there's another extension using the arduino language id (the second one in the store in terms of downloads) and that you decided to drop it in favor of c++ syntax in #167. I was wondering if you could introduce again the language id for us to support the icon linkage easily.

To be honest, I'm not very familiar with the effect of adding this language attribute so it may not be possible for you to keep both the language id and the syntax separated (language id = arduino && syntax = cpp).

[yaohaizh]

Current, this extension is leverage the C++ extension for language service, so we have to keep the language id and syntax to C++. Not sure we can have icon based on the file extension.

[robertohuertasm]

I thought that maybe you could just provide another id in the languages section of your package.json as currently, you already have arduino-output. Grammar would still be cpp but you would provide arduino as a new language id supporting .ino and .pde.

[robertohuertasm]

I'll use file extension instead of language id. Don't worry. Thanks!

[yaohaizh]

Thanks