Copy GitHub action variables

Copy-AsDotEnv.ps1

# Export to .env file - Does not work with Windows Poershell 5.1
$tmpFile = [System.IO.Path]::GetTempFileName()
Write-Verbose -Verbose "Using $tmpFile"
gh variable list --json name,value --template "{{range .}}{{.name}}={{.value}}`n{{end}}" | Out-File -FilePath $tmpFile -Encoding utf8NoBOM

# cd to new repo or update Owner/Repo
gh variable set --env-file $tmpFile --repo Owner/Repo

Remove-Item $tmpFile

Copy-AsJson.ps1

$ghVars = gh variable list --json name,value | ConvertFrom-Json

# cd to new repo or update Owner/Repo
gh variable set --env-file $tmpFile --repo Owner/Repo
$ghVars | % { $_.value | gh variable set $_.name --repo Owner/Repo }