Prevent console output interference with LSP communication

[TheAngryByrd]

Try to handle rogue Console.Writelines from libraries we don't control.

ionide/ionide-vscode-fsharp#2102

Example in a f# script of this behavior:

open System
open System.IO

Console.SetOut(TextWriter.Null)
let cout = Console.OpenStandardOutput()
let tcout = new StreamWriter(cout)

Console.WriteLine("This will not be seen in the console.")
printfn "Neither will this."
Console.Out.WriteLine("This will also not be seen in the console.")
Console.Out.Flush()

tcout.WriteLine("This will be seen in the output stream.")
tcout.Flush()

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The only other solution is to explore other transport means like sockets/pipes.

[baronfel]

Lol, I love it :D