Support for .vscode/extensions.json

[Kreyren]

Expecting theia on gitpod to prompt installation of these extensions on startup (like vscode does).

Example file:

{
    "recommendations": [
        "ms-azuretools.vscode-docker",
        "exiasr.hadolint",
        "timonwong.shellcheck",
        "coenraads.bracket-pair-colorizer-2",
        "markwylde.vscode-filesize",
        "oderwat.indent-rainbow",
        "stephen-riley.regexworkbench",
        "medo64.render-crlf",
        "gruntfuggly.todo-tree",
        "vscodevim.vim",
        "slenderman00.vsirc",
        "genuitecllc.codetogether",
        "streetsidesoftware.code-spell-checker",
        "aaron-bond.better-comments",
        "tamasfe.even-better-toml"
    ]
}

[Kreyren]

ah it does that already.. my fault!

[Kreyren]

My fault again, that was vscode. Theia doesn't have this behavior.

[colin-grant-work]

@vince-fugnitto, I think I can take this one. Do you think it should be its own package - pretty light, but that would parallel preferences, tasks, debug/launch - or should it be put in one of the plugin-related packages? It'll be connected with the plugin search view, in part (VSCode lets you search for @recommended to get recommended plugins), so that might be a logical place for it.

[vince-fugnitto]

@colin-grant-work I have not thought too much about it yet, but perhaps vsx-registry would be sufficient as a location? In the end we would need to use the registry api to fetch these extensions by id.