Cache extension manifest files

[jrieken]

We have seen some performance report about slow extension scanning and registering. This is the umbrella item which we use to track this.

[jens1o]

is this going to be handled in august release?

[sandy081]

@jens1o No

[jens1o]

😢

[shanalikhan]

Explore caching the package.json files of installed extensions

In iteration plan.
So Code will generate the extension.json file itself and to export / from API and CLI to setup extensions.

It would be great help for my Settings Sync !