Provide notebook support for Qute

[JessicaJHee]

Fixes #420

Signed-off-by: Jessica He jhe@redhat.com

[rgrunber]

Try something like a cell that has just {foo} or some property that doesn't exist. VS Code will also throw an error indicating the request failed.

[Trace - 9:53:58 a.m.] Sending request 'workspace/executeCommand - (1)'.
Params: {
    "command": "qute.generate",
    "arguments": [
        "{foo}",
        "{\n\t\"friends\": [\"Max\", \"Fred\"]\n}"
    ]
}


[Trace - 9:53:58 a.m.] Received response 'workspace/executeCommand - (1)' in 26ms. Request failed: Property "foo" not found on the base object "com.google.gson.internal.LinkedTreeMap" in expression {foo} in template 1 on line 1 (-32001).
Error data: {
    "message": "Property \"foo\" not found on the base object \"com.google.gson.internal.LinkedTreeMap\" in expression {foo} in template 1 on line 1"
}


[Error - 9:53:58 a.m.] Request workspace/executeCommand failed.
  Message: Property "foo" not found on the base object "com.google.gson.internal.LinkedTreeMap" in expression {foo} in template 1 on line 1
  Code: -32001 
[object Object]

[angelozerr]

Try something like a cell that has just {foo} or some property that doesn't exist. VS Code will also throw an error indicating the request failed.

Indeed there ar esome limitations, but do you think we could merge this notebook support? @fbricon what do you think abiut this PR?

[fbricon]

@angelozerr I'm not convinced anyone needs this feature. Unless @maxandersen really wants it, I'd keep it on the shelf.
If we do include it, then I want to see some telemetry, to track its usage.