Facility for per-user customization: active/inactive extensions

[mcg1969]

I'd love to be able to install Emacs, VIM, and SublimeText bindings into the standard image and make it possible for users to choose which extensions are enabled. I don't believe this is possible wholly through a settings.json setting, but we can see. It might require a more custom hack to read a list of active extensions from a different secret, and modify the local .vscode settings as needed to enable/disable.

[AlbertDeFusco]

Would "recommended extensions" be appropriate? I need to see if we can pre-download the extensions without installing them. When the editor comes up VSCode will pop-up that there are recommended extensions. The user can then decide how to proceed.

https://code.visualstudio.com/docs/editor/extension-gallery#_workspace-recommended-extensions

Separately there can be a way for a user to supply a list of extensions in a secret to be installed in start_vscode.sh. Or would the secret be the preferred way?

[AlbertDeFusco]

Looks like we might be able to disable pre-installed extensions when the ide is launched

microsoft/vscode#52639 (comment)