Support Perl Language Server in vscode

[alexgarel]

It would be nice to have support for Perl Language Server in vscode.

[alexgarel]

This PR https://github.com/openfoodfacts/openfoodfacts-server/pull/6491 adds percritic and there is a first work to add perl language server.

For perlcritic we have to manually patch extension we should

• [x] propose a fix for https://github.com/sfodje/perlcritic/issues/26

However we are blocked by different issues for perl language server, in the configuration I imagined:

• https://github.com/richterger/Perl-LanguageServer/issues/131
• https://github.com/richterger/Perl-LanguageServer/issues/132

The author of the extension propose to go for ssh instead of launching through docker. This has the drawback that:

• we must add openssh to docker build
• you must be running your docker before vscode and independently (and we shall not use the main backend process for we restart it frequently)

Third option is to go for vscode remote container the drawback here is that we have to:

• duplicate all the installs done for backend in a new dockerfile (you have to start from vscode container to have all needed tools installed)
  • this maybe mitigated a bit by creating a dockerfile concatenating others, but still there will be duplication (eg. for package installs, which in turns could be delegated to reusable scripts, but this does augment complexity quite a lot)
• duplicate all the specific mounts / env vars settings that are used for backend and frontend

[github-actions[bot]]

This issue is stale because it has been open 90 days with no activity.