VSCode tasks: to work around known issues

[nightroman]

There are two known issues of tasks generated by New-VSCodeTask.ps1.

Issue 1. Output encoding.

Non ASCII task output may be shown incorrectly in VSCode output window.
See Tasks should support specifying the output encoding

Issue 2. Console is required.

Some tasks may require the console host, for example for interaction (Read-Host, confirmations, etc.)
Some tasks may use colored output, so that in such cases they are better to be invoked in a console.

[nightroman]

Both issues are resolved with an extra cmd file used as the task runner.

Issue 1. chcp 65001 does the trick:

chcp 65001 > nul
PowerShell.exe -NoProfile -ExecutionPolicy Bypass "& 'Invoke-Build.ps1' %1"

Issue 2. Task tags #ConsoleHost tell to add an extra parameter and invoke as

start PowerShell.exe -NoExit -NoProfile -ExecutionPolicy Bypass "& 'Invoke-Build.ps1' %1"