Merge contributed default configuration values of type object

[mkhl]

vscode 1.64 added explorer file nesting, and extensions authors sensibly want to contribute additional nesting patterns for the tooling they support, for example rust-lang/rust-analyzer#13580

unfortunately this currently does not contribute an additional nesting pattern but overwrites the other default nesting patterns, so with that extension installed a package.json and package-lock.json are no longer nested unless i add that pattern myself

it would be great if extensions could provide default patterns without overriding the vscode defaults, or other patterns contributed by other extensions. the contribution point documentation provides no insight into doing this, and my understanding is that exactly one contributed default value "wins" so i think that might have to change

[mkhl]

this probably generalizes to any lists and objects, or at least lists and objects containing file patterns, but i couldn't find an issue for that either and wanted a motivating use-case

[lramos15]

Assigning to @sandy081 as this is generalized to many object patterns. The documentation does explicitly say override.

In this case it might be best for the extension to just write into the user's settings file.

[vscodenpa]

We closed this issue because we don't plan to address it in the foreseeable future. If you disagree and feel that this issue is crucial: we are happy to listen and to reconsider.

If you wonder what we are up to, please see our roadmap and issue reporting guidelines.

Thanks for your understanding, and happy coding!