Create new command to interpolate text into code, to run in the console

[juliasilge]

In #5747 we've got a feature request for a command similar to workbench.action.executeCode.console that would allow someone to interpolate a selection into a bit of code, to run in the console. Something like this:

{
    "key": "Cmd+Shift+S",
    "command": "workbench.action.executeSelection.console",
    "when": "editorTextFocus",
    "args": {
        "langId": "r",
        "code": "str(${selectedText})",
        "focus": true
    }
}

You can already run selected code, but this is about selecting code and then constructing/interpolating a new bit of code to run.

[jennybc]

This type of variable substitution is the idea (these are the "usual suspects" for what users might want to use in a custom command/key binding they might create around workbench.action.executeSelection.console):

https://code.visualstudio.com/docs/editor/variables-reference

I imagine this runs into similar concerns as "runnable code" in terms of security. Individual users crafting custom commands is one thing ("you break it you buy it"), but having other folks do this in an extension is another.