Feature request: add global setting: set "console": "integratedTerminal" as default

## Environment data
`dotnet --info` output:
VS Code version:
C# Extension version:

feature request.

## OmniSharp log

feature request.

## Steps to reproduce

feature request.

## Expected behavior

After specifying the default `"console"` value in the vscode global settings, every time a new `launch.json` is initiated, the `"console"` value could be preset to `"integratedTerminal"`.

## Actual behavior

There has not been an option to change the preset value of `"console"` in `launch.json`.